Costco Copycat Chocolate Muffins with Cinnamon and Chocolate Chips
These rich, bakery-style chocolate muffins recreate the beloved Costco version with their signature tender crumb and generous chocolate chips. The addition of hot water creates an ultra-moist texture, while cinnamon adds warmth to complement the cocoa. Perfect for breakfast, dessert, or an afternoon treat, these jumbo-sized muffins deliver the same indulgent experience as the original. The batter may seem thin when adding the hot water, but this technique ensures the final muffins are incredibly soft and fudgy.
Ingredients
Instructions
- 1
Preheat oven and prepare jumbo muffin pan with liners or cooking spray
- 2
Mix all dry ingredients in stand mixer bowl with paddle attachment on medium speed
- 3
Gradually add egg, milk, and oil, mixing until incorporated
- 4
Remove bowl from mixer and stir in hot water until incorporated
- 5
Fold in chocolate chips
- 6
Fill muffin wells just above half-full with batter
- 7
Sprinkle additional chocolate chips on top
- 8
Bake until done
- 9
Cool before serving
Tips
The batter will be thin after adding hot water - this is correct and creates the moist texture.
Use jumbo muffin pans for authentic Costco-sized muffins, or adjust baking time for standard size.
Don't overfill the wells to prevent overflow during baking.
Good to Know
Store covered at room temperature for 3 days or refrigerate for up to 1 week.
Can be made 1 day ahead and stored covered. Freeze baked muffins for up to 3 months.
Serve at room temperature or warm briefly in microwave for 15-20 seconds.
Common Mistakes
Don't overmix after adding wet ingredients to avoid tough muffins.
Don't skip the hot water - it's essential for the moist texture.
Substitutions
Dairy-Free Swaps
Vegan Options
Gluten-Free Swaps
General Alternatives
FAQ
Can I use regular-sized muffin pans?
Yes, but reduce baking time to 18-20 minutes and check with a toothpick for doneness.
What if I don't have a stand mixer?
You can mix by hand with a whisk, but ensure dry ingredients are well combined before adding wet.
How long do these muffins keep?
They stay fresh for 3 days at room temperature or up to 1 week refrigerated in an airtight container.