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Homemade Hamburger Buns

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Copycat Costco Double Chocolate Muffins are rich, moist bakery-style muffins loaded with cocoa and chocolate chips, delivering a soft crumb and intense chocolate flavor in every bite.

Ingredients

  • 2 cups all-purpose flour
  • 3/4 cup unsweetened cocoa powder
  • 1 1/2 cups granulated sugar
  • 2 tsp baking powder
  • 1/2 tsp baking soda
  • 1/2 tsp salt
  • 2 large eggs
  • 1 cup milk
  • 1/2 cup vegetable oil
  • 1 tsp vanilla extract
  • 1 cup sour cream or plain yogurt
  • 1 1/2 cups semi-sweet chocolate chips
  • 1/4 cup chocolate chips for topping (optional)

Instructions

  1. Preheat the oven to 375°F (190°C) and line a muffin tin with paper liners.
  2. In a large bowl, whisk together the flour, cocoa powder, sugar, baking powder, baking soda, and salt.
  3. In another bowl, whisk together the eggs, milk, vegetable oil, vanilla extract, and sour cream until smooth.
  4. Pour the wet ingredients into the dry ingredients and mix gently until just combined.
  5. Fold in the chocolate chips without overmixing the batter.
  6. Divide the batter evenly among the muffin cups, filling them nearly to the top.
  7. Sprinkle additional chocolate chips on top if desired.
  8. Bake for 18–22 minutes until a toothpick inserted into the center comes out with a few moist crumbs.
  9. Cool the muffins in the pan for 5 minutes before transferring them to a wire rack.
  10. Serve warm or at room temperature.

Notes

  • Do not overmix the batter to keep the muffins soft and tender.
  • Greek yogurt can be used instead of sour cream for similar moisture.
  • Adding espresso powder enhances the chocolate flavor.
  • Store muffins in an airtight container at room temperature for up to 3 days.
  • Freeze individually wrapped muffins for up to 2 months.

Nutrition