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Export 9 ingredients for grocery delivery
Step 1
Preheat the oven to 350 degrees F. Line 12 muffin cups with paper liners.
Step 2
Whisk together the flour, cocoa powder, baking powder, baking soda and salt in a large bowl. Stir in the chocolate chips. In a medium bowl, whisk together the milk, brown sugar, butter, oil, vanilla and eggs until smooth.
Step 3
Quickly fold the milk mixture into the flour mixture with a rubber spatula. Divide the batter evenly among the prepared muffin cups. Bake until a toothpick inserted in the center comes out clean, about 25 minutes. Transfer the muffins from the pan to a wire rack to cool.