Name: Irresistibly Indulgent Costco Double Chocolate Muffins to Bake at Home
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Ingredients: 3 large eggs (provide moisture and fluffiness); 0.5 cup oil (can be substituted with melted butter); 0.5 cup milk (use almond or oat milk for dairy-free); 0.25 cup water (helps thin the batter); 1 teaspoon vanilla extract (enhances the chocolate flavor); 1 cup sour cream (or plain Greek yogurt for health); 1 box Devil’s food cake mix (adds chocolate foundation); 3.9 ounce instant chocolate fudge pudding (contributes to moistness); 0.5 teaspoon cinnamon (elevates chocolate flavor); 2.5 cups semisweet chocolate chips (ensure gooey goodness); 0.5 cup semisweet chocolate chips (for extra chocolatey finish)

The moment I took my first bite of a Costco Double Chocolate Muffin, I was transported to chocolate heaven—a dense, rich texture that practically melts in your mouth. If you're anything like me, you cherish the joy of homemade treats but yearn for the convenience of quick recipes without compromising on taste. These muffins are a sweet solution! Not only do they boast a simple 15-minute prep time, but they’re also a chocolate lover's dream, packed with an indulgent mix of chocolate chips and fudgy goodness. Whether you’re whipping up a batch for brunch or satisfying an afternoon craving, these muffins have you covered. So, are you ready to bring this chocolatey delight to your kitchen?

Why are these muffins a must-try?

Decadent Delight: Indulging in these Costco Double Chocolate Muffins is like a hug in muffin form! The rich, chocolatey batter is a comforting treat for any chocolate lover.

Easy to Make: With just 15 minutes of prep time, you can satisfy your cravings without spending hours in the kitchen.

Versatile Enjoyment: Perfect for breakfast, brunch, or snack time, they are sure to impress friends and family alike.

Crowd-Pleasing Appeal: These muffins are not only loved by kids but also by adults, making them ideal for gatherings or your next potluck.

Gooey Goodness: Loaded with chocolate chips, every bite offers a decadent and gooey experience that will keep you coming back for more!

Costco Double Chocolate Muffins Ingredients

This beloved muffin recipe calls for just the right mix of ingredients to create a truly indulgent treat.

For the Batter

3 large eggs – eggs provide moisture and fluffiness to the muffins.
½ cup oil – oil keeps the muffins moist and soft; can be substituted with melted butter for added flavor.
½ cup milk – milk enriches the batter; use almond or oat milk for a dairy-free version.
¼ cup water – water helps thin the batter for a smooth consistency.
1 teaspoon vanilla extract – vanilla adds a delightful aroma and enhances the chocolate flavor.
1 cup sour cream (or plain Greek yogurt) – sour cream makes the muffins rich and tangy; Greek yogurt is a healthier alternative.
1 box Devil’s food cake mix – this adds a rich chocolate foundation to our Costco Double Chocolate Muffins.
3.9 ounce box instant chocolate fudge pudding – pudding mix contributes to the moistness and fudgy texture of the muffins.
½ teaspoon cinnamon – a touch of cinnamon elevates the chocolate flavor with warmth.
2 ½ cups semisweet chocolate chips (divided use) – chocolate chips ensure every bite is loaded with gooey goodness; mix dark chocolate for a richer taste.

For Topping

½ cup semisweet chocolate chips – sprinkle on top of the batter before baking for an extra chocolatey finish.

Step‑by‑Step Instructions for Costco Double Chocolate Muffins

Step 1: Preheat the Oven and Prepare Muffin Tins
Begin by preheating your oven to 375°F (190°C). While it heats, line two 6-well jumbo muffin tins with cupcake liners or lightly spray them with nonstick cooking spray. This step ensures that your Costco Double Chocolate Muffins release easily and maintain their lovely shape as they bake.

Step 2: Mix Wet Ingredients
In a large mixing bowl, combine the 3 large eggs, ½ cup of oil, ½ cup of milk, ¼ cup of water, and 1 teaspoon of vanilla extract. Using an electric mixer or stand mixer, beat these ingredients together on medium speed for about 2 minutes until well blended and slightly frothy. This mixture forms the rich base for your muffins.

Step 3: Add Sour Cream
Next, add in 1 cup of sour cream (or plain Greek yogurt) to the wet mixture. Stir gently until fully incorporated, taking care not to overmix. The sour cream adds a moist richness to your Costco Double Chocolate Muffins, contributing to their delightful texture that everyone will love.

Step 4: Incorporate Dry Ingredients
Now, fold in 1 box of Devil’s food cake mix, 3.9 ounces of instant chocolate fudge pudding, and ½ teaspoon of cinnamon to your wet mixture. Stir gently at a low speed until just combined—aim for a thick batter with no visible dry ingredients. This combination is what gives your muffins that deliciously rich chocolate flavor.

Step 5: Fold in Chocolate Chips
With your batter prepped, now fold in 2 cups of semisweet chocolate chips using a spatula. Be gentle to keep the batter airy while ensuring the chocolate chips are evenly distributed. This step adds indulgent pockets of chocolate in every bite of your Costco Double Chocolate Muffins.

Step 6: Scoop Batter into Muffin Tins
Using a spring-loaded cookie scoop, fill each muffin well about ¾ full with the batter. Make sure to leave space for rising. Once filled, generously top each muffin with the remaining ½ cup of chocolate chips for an extra chocolatey finish that will melt beautifully while baking.

Step 7: Bake the Muffins
Place the muffin tins in the preheated oven on the middle rack and bake for approximately 20-25 minutes. Keep an eye on your muffins; they’re ready when a toothpick inserted into the center comes out clean or with just a few moist crumbs attached. This indicates that the Costco Double Chocolate Muffins are perfectly baked and ready to be enjoyed.

What to Serve with Costco Double Chocolate Muffins

Treat your loved ones to a cozy gathering filled with delightful flavors that complement the indulgent chocolate goodness.

Fresh Berries: A medley of strawberries and raspberries provides a tart contrast, brightening each delicious bite of muffin.
Whipped Cream: Light and airy, whipped cream adds creaminess, making your muffin experience even more decadent and indulgent.
Vanilla Ice Cream: The rich, cool creaminess of vanilla ice cream is a classic pairing that melts beautifully alongside warm muffins.
Coffee or Espresso: An aromatic cup of coffee or espresso enhances the chocolate flavors, creating a delightful morning or afternoon treat.
Chocolate Sauce: Drizzling warm chocolate sauce over the muffins adds an extra layer of chocolaty bliss that any chocoholic will adore.
Nutty Granola: Crunchy, nutty granola sprinkled on top adds a delightful texture that contrasts with the soft, fudgy muffins, rounding out a perfect snack.
Coconut Yogurt: A dollop of creamy coconut yogurt creates a refreshing tropical twist that balances the richness of the muffins.
Milk or Nut Milk: Pairing these muffins with a glass of cold milk or nut milk offers a classic pairing that satisfies any sweet tooth.
Orange Zest: A sprinkle of fresh orange zest brings a bright citrus note, livening up the deep chocolate flavors for a harmonious balance.
Chai Tea: The warm spices of chai tea create a comforting drink that complements the chocolate perfectly and invites cozy moments.

How to Store and Freeze Costco Double Chocolate Muffins

Room Temperature: Store leftover muffins in an airtight container at room temperature for up to 3 days to maintain their moistness.

Fridge: For extended freshness, keep muffins in the refrigerator for up to a week; ensure they’re in a tightly sealed bag or container to prevent drying out.

Freezer: Freeze Costco Double Chocolate Muffins individually wrapped in plastic wrap or in a sealed freezer bag for up to 3 months. This way, you can enjoy a delightful chocolate treat whenever the craving strikes!

Reheating: To reheat, simply microwave a muffin for 15-20 seconds or warm them in the oven at 350°F (175°C) for about 5-10 minutes for that freshly baked experience.

Make Ahead Options

These Costco Double Chocolate Muffins are perfect for busy home cooks who need to save time without sacrificing flavor! You can prepare the muffin batter up to 24 hours in advance; just store it in an airtight container in the refrigerator to maintain its freshness. Additionally, the muffins can be baked and cooled, then frozen for up to 3 months—perfect for a quick breakfast or snack! When you're ready to enjoy, simply reheat them in the microwave for about 15-20 seconds or warm in the oven. This way, they'll taste just as delicious as when they were freshly made. Enjoy the convenience of advanced preparation while treating your family to these scrumptious muffins!

Tips for the Best Costco Double Chocolate Muffins

Avoid Overmixing: When combining dry and wet ingredients, mix just until combined to keep your muffins light and fluffy. Overmixing can lead to dense results.

Room Temperature Ingredients: Use room temperature eggs and milk to create a smoother batter and ensure even baking, resulting in delicious Costco Double Chocolate Muffins.

Check for Doneness: Ovens vary, so start checking your muffins a few minutes before the recommended baking time to prevent overbaking. A toothpick should come out clean.

Customize Your Chips: Feel free to mix in different types of chocolate chips—dark, milk, or even white chocolate—for a unique twist on this classic recipe.

Storage Tips: Keep any leftovers in an airtight container at room temperature to maintain softness, or freeze them individually for later cravings.

Costco Double Chocolate Muffins Variations

Feel free to make these muffins your own! Each tweak opens a new world of delicious possibilities.

Gluten-Free: Substitute the cake mix with a gluten-free chocolate cake mix to enjoy these muffins without the gluten.
Dairy-Free: Use almond milk and coconut yogurt instead of regular milk and sour cream for a creamy, dairy-free version.
Nutty Chocolate: Add ½ cup of chopped walnuts or pecans for a delightful crunch that complements the soft texture of the muffins.
Spicy Kick: Incorporate a pinch of cayenne pepper to the batter for a subtle heat that elevates the rich chocolate flavor.
Fruit-Filled: Stir in 1 cup of fresh raspberries or chopped bananas for a fruity twist that adds freshness to each bite.
Variant Cocoa: Replace some of the semisweet chocolate chips with dark chocolate chips for a deeper, more intense chocolate experience.
Zesty Chocolate: Add the zest of an orange or lemon to the batter for a burst of citrus that beautifully balances the richness.
Double Fudge: Mix in an extra box of chocolate fudge pudding for an even more decadent, fudgy texture that chocolate lovers will adore.

With these variations, the only limit is your imagination!

Costco Double Chocolate Muffins Recipe FAQs

How do I know if my eggs are fresh for the Costco Double Chocolate Muffins?
Absolutely! To check the freshness of your eggs, simply submerge them in a bowl of water. Fresh eggs will sink and lay flat on the bottom, while older eggs will stand upright or float. If you see an egg floating, it's best to discard it.

How long can I store my muffins at room temperature?
You can store your Costco Double Chocolate Muffins in an airtight container at room temperature for up to 3 days. This keeps them lovely and moist! Always check for any signs of mold or drying before indulging.

Can I freeze my muffins, and what’s the best way to do it?
Definitely! To freeze your Costco Double Chocolate Muffins, wrap each muffin tightly in plastic wrap or parchment paper, then place them in a sealed freezer bag. This way, they'll stay fresh for up to 3 months. When you're ready to enjoy one, just thaw it overnight in the fridge or warm it in the microwave for 15-20 seconds!

What should I do if my muffins come out too dense?
If your muffins turn out dense, it might be due to overmixing the batter. Remember, mix just until combined! Additionally, using cold ingredients can contribute to denser muffins. Always use room temperature eggs and milk to achieve optimal fluffiness.

Can I make these muffins dairy-free or gluten-free?
Very! To make dairy-free Costco Double Chocolate Muffins, substitute the milk with almond or oat milk and the sour cream with a dairy-free yogurt. For a gluten-free option, look for a gluten-free chocolate cake mix and check your pudding mix for gluten-free certification. These simple swaps can cater to your dietary needs without sacrificing taste!

What happens if I use expired cake mix or pudding?
I recommend against it! Using expired cake mix or pudding can affect the taste and texture. Always check the packaging for the expiration date, and if it's past the date, it’s safer to grab a fresh box to ensure your muffins are as delicious as they should be.