Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins

Last Updated on February 12, 2026 by Aniela Recipes Team

The moment the first bite of these Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins hits your palate, you ll understand why they re a labor of love worth every minute spent in the kitchen. Picture this: the warm, sweet scent of cinnamon wafts through your home as the muffins rise, their tops adorned with a crunchy streusel that promises a delightful contrast to the tender, spiced apple interior.

I stumbled upon this recipe seeking a healthier alternative to store-bought treats, and the thrill of recreating that iconic Costco muffin, gluten-free style, was irresistible. Not only do these muffins offer a burst of flavor, but they also showcase a hidden elegance that impresses friends and family at any gathering.

Whether you re easing into a Sunday brunch or simply indulging yourself after a long day, these muffins are a nostalgic nod to comfort food that everyone can enjoy without sacrificing taste or dietary needs. Let s brew a cup of coffee and dive into this flavorful journey together!

Why will you love Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins?

Unforgettable flavor: These muffins deliver an intoxicating blend of sweet apples, warm spices, and a crunchy streusel topping that will make every bite a cherished memory.
Healthy indulgence: Satisfy your cravings without the guilt, as they embrace gluten-free ingredients while still being incredibly tasty.
Simple preparation: With user-friendly instructions, you ll find that creating gourmet muffins at home is surprisingly easy, perfect for both novice and seasoned bakers.
Perfect for sharing: Their impressive size and eye-catching glaze make them an excellent choice for brunches, gatherings, or even a cozy treat just for you!
Gourmet appeal: Elevate your breakfast game and enjoy a homemade version of a beloved store-bought classic that s sure to impress family and friends alike.
Easy to customize: Feel free to add your favorite nuts or dried fruits, allowing for endless delicious possibilities!

Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins Ingredients

For the Muffins

• Salted butter 5 Tbsp, for richness and moisture.
• Gluten-free 1-1 flour mix with xanthan gum 1 1/2 Cups total, ensures the perfect texture in these muffins.
• Blanched almond flour 3/4 Cup, adds a nutty flavor while keeping it gluten-free.
• Ground cinnamon 1 tsp, for that warm, comforting spice.
• Packed brown sugar 1/2 Cup, enhances sweetness and adds depth.
• Pinch salt balances the flavors beautifully.
• Vanilla extract 1/8 tsp, a splash of sweetness that rounds out the taste.
• Large eggs 4, essential for structure and richness.
• Sour cream 1/4 Cup, keeps the muffins moist and tender.
• Arrowroot starch 1/2 Cup, a great thickening agent that helps with gluten-free baking.
• Baking powder 2 1/2 tsp, ensures the muffins rise perfectly.
• Ground nutmeg 1/4 tsp, an aromatic spice that pairs wonderfully with apples.
• Ground cloves 1/8 tsp, for a hint of warmth and depth.
• Packed peeled grated tart apples 1 1/4 Cups, the star ingredient that adds moisture and tang.

For the Glaze

• Powdered sugar 1 Cup, sweetens and creates that lovely glossy finish.
• Whole milk 2-4 Tbsp, adjust to achieve your desired glaze consistency.
• Melted salted butter 1 tsp, adds richness to the glaze.
• Vanilla extract 1/2 tsp, enhances the overall sweetness with a touch of warmth.
• Pinch salt to round out the sweetness in the glaze.

These Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins are a delightful indulgence that will leave your friends and family asking for more! Enjoy your baking adventure!

How to Make Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins

1. Prepare the streusel: In a medium bowl, combine all streusel topping ingredients and mix until crumbly. Let it sit while you whip up the delicious muffin batter to enhance those flavors.

2. Cream the butter and sugars: In a large bowl, cream the 3/4 Cup salted butter with white sugar and brown sugar until light and fluffy, about 3-4 minutes. This step adds a delightful airiness to your muffins.

3. Incorporate eggs and sour cream: Add the eggs one by one, mixing well after each addition. Then, blend in the sour cream and 1 1/2 tsp vanilla extract until fully combined, creating a rich and creamy base.

4. Sift in dry ingredients: Sift in the gluten-free flour, arrowroot starch, almond flour, baking powder, and salt. Stir gently until everything is combined, being careful not to overmix for a tender muffin, which should feel thick and smooth.

5. Add the apples: Grate 2-3 tart apples and pack them into a measuring cup; fold them into the muffin batter gently to keep the mixture light and fluffy.

6. Let it rest: Allow the batter to rest at room temperature for 30 minutes. This helps the flavors meld beautifully and results in a better texture.

7. Preheat the oven: Preheat your oven to 425 °F and grease five 4-inch round cake pans to ensure easy release once baked.

8. Fill the pans: Scoop the batter evenly into the prepared pans, filling them about 2/3 to 3/4 full. Sprinkle the streusel topping generously over the batter to achieve that signature crunchy finish.

9. Bake with care: Bake your muffins for 5 minutes. Without opening the oven door, lower the temperature to 350 °F and bake for an additional 25-30 minutes. The tops should spring back when lightly pressed.

10. Cool down: Once baked, let the muffins cool for at least 10-15 minutes in the pans before turning them out. This helps them maintain their shape and moistness.

11. Make the glaze: In a cereal bowl, whisk together powdered sugar, melted butter, 1/2 tsp vanilla extract, and 1-2 Tbsp of milk until it reaches your desired consistency.

12. Drizzle and enjoy: Drizzle the glaze over each muffin, and serve warm, appreciating every bite of your homemade goodness!

Optional: For a special twist, add chopped nuts or dried fruits into the batter!
Exact quantities are listed in the recipe card below.

Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins Variations

Feel free to let your creativity shine and customize these muffins just the way you like them!

• Nutty Delight: Add 1/2 cup of chopped walnuts or pecans for a crunchy texture that complements the soft muffin beautifully.
• Fruit Fusion: Substitute some of the apples with grated zucchini or ripe bananas to create a different fruity flavor profile that s equally delicious.
• Dairy-Free: Use coconut oil or vegan butter in place of salted butter and swap the sour cream for coconut yogurt for a delightful vegan version.
• Extra Spicy: Boost the warmth by adding an additional 1/2 teaspoon of cinnamon or a hint of ginger for a more fragrant, spicy aroma.
• Muffin Bites: For bite-sized treats, pour the batter into a mini muffin tin and bake for about 10-15 minutes. They make the perfect snack!
• Sweetener Swap: Experiment with maple syrup or honey instead of brown sugar to introduce a touch of natural sweetness that pairs well with apples.
• Chocolate Twist: Stir in 1/2 cup of dairy-free chocolate chips into the batter for a decadent, melty surprise in every muffin.
• Glazed Zing: Add a squeeze of fresh lemon juice to your glaze for an uplifting citrusy note that brightens the overall flavor.

Unlock a world of flavors and textures by trying these exciting variations!

How to Store and Freeze Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins

Room Temperature: Store muffins in an airtight container at room temperature for up to 3 days. They ll stay moist, but be sure to consume them quickly for the best flavor!

Fridge: If you re looking to extend freshness, keep them in the fridge, well-wrapped, for up to 1 week. Just pop them in the microwave for a few seconds to warm them back up!

Freezer: For longer storage, freeze the muffins in a single layer on a baking sheet, then transfer to a freezer bag for up to 3 months. Thaw in the fridge overnight and enjoy whenever the craving strikes!

Reheating: When you re ready to enjoy your muffins, reheat in the microwave for about 15-20 seconds. This will bring back their delightful warmth and make that glaze extra gooey!

What to Serve with Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins?

Savoring these delightful muffins is an experience made even better with the perfect accompaniments that enhance each delicious bite.

• Creamy Yogurt: A dollop of Greek yogurt adds a tangy creaminess that complements the sweet muffins, making it a balanced treat.

• Fresh Fruit Salad: Bright and colorful, a mix of berries and citrus provides refreshing contrast to the muffins rich flavors and textures.

• Silky Hot Chocolate: The warm, chocolatey drink creates an indulgent pairing, perfect for cozy mornings or soothing afternoons.

• Maple Syrup Drizzle: A light drizzle of pure maple syrup can elevate the muffin experience, bringing a sweet sweetness that pairs beautifully with apples.

• Cinnamon-Spiced Coffee: The aromatic notes of cinnamon coffee enhance the muffins warm spices, turning breakfast into a comforting ritual.

• Nutty Granola: A crunchy side of granola offers added texture, while the oats and nuts create a satisfying crunch that balances the soft muffins.

Delight in these combinations, and share the joy with loved ones as you enjoy your homemade treats together!

Make Ahead Options

These Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins are perfect for meal prep enthusiasts! You can prepare the muffin batter up to 24 hours in advance by mixing all the ingredients until smooth and then refrigerating it. To save even more time, you can also make the streusel topping ahead of time just keep it stored in an airtight container in the fridge for up to 3 days. When you re ready to bake, simply scoop the batter into your prepared pans, sprinkle the streusel on top, and bake as directed. This way, you ll enjoy fresh, homemade muffins with minimal effort, all while keeping the delicious taste and texture intact!

Helpful Tricks for Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins

• Butter Quality Matters: Use high-quality salted butter for the best flavor and moisture content; it greatly enhances the muffins richness.
• Proper Mixing: Avoid overmixing the batter once you add the dry ingredients. Gentle folding preserves the muffins fluffiness and tender texture.
• Rest the Batter: Giving the muffin batter a 30-minute rest allows flavors to develop and contributes to a better texture; don t skip this step!
• Measuring Apples: Make sure to grate and pack your tart apples properly; too few apples can make the muffins dry, while too many can lead to sogginess.
• Bake with Precision: Keep an eye on your muffins, especially during the last minutes. Perfectly baked muffins will spring back when gently pressed, a key sign of doneness.
• Glaze Consistency: Adjust the milk in your glaze to your preference. A thicker glaze will create a beautiful drizzle, while a thinner one can coat the muffins more evenly.

Enjoy your baking journey with these expert tips for Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins!

Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins Recipe FAQs

What type of apples should I use for the muffins?
Absolutely! For the best flavor and texture, I recommend using tart apples like Granny Smith or Honeycrisp. These varieties provide the perfect balance of sweetness and acidity, enhancing the overall taste of your muffins. Avoid overly soft or sweet apples, as they might make the muffins soggy.

How should I store these muffins once baked?
You can store these muffins in an airtight container at room temperature for up to 3 days. If you want to keep them fresh for a week, wrap them well and refrigerate. Just a quick trip to the microwave for about 15-20 seconds will warm them up perfectly!

Can I freeze Giant Glazed Gluten Free Costco Copycat Apple Streusel Muffins?
Very! To freeze, place the muffins in a single layer on a baking sheet until solid. Then, transfer them to a freezer bag, ensuring you remove as much air as possible. They can be frozen for up to 3 months! When you re ready to enjoy, let them thaw in the fridge overnight, and they ll taste fresh-baked in no time.

What should I do if the batter seems too runny?
If you find that your batter is too runny, it might be due to the moisture from the apples or the sour cream. To troubleshoot, try adding a little more gluten-free flour or arrowroot starch, one tablespoon at a time, until you reach a thick but pourable consistency. Gently fold it in to avoid overmixing!

Are these muffins safe for everyone, including those with allergies?
Yes! These muffins are gluten-free and can be made dairy-free by substituting the butter and sour cream with coconut oil and a dairy-free yogurt. Just double-check each ingredient to ensure they meet your dietary needs, as individual brands can vary in content. Happy baking, and enjoy your delicious adaptations!