Step 1

Using a 12-cup muffin tin either spray the tins with cooking spray or use paper liners.  Preheat the oven to 425 degrees.

Step 2

In a large mixing bowl, mix on medium speed the butter and peanut butter until combined.

Step 3

Add in the brown sugar and the eggs one at a time and mix on medium until combined.

Step 4

Add the milk and mix until combined.

Step 5

Add the flour, baking powder and salt to the bowl and mix on medium-low until the flour is just incorporated, then slowly mix in the chocolate chips.

Step 6

Spoon or scope the muffin batter into the prepared muffin tins. Bake for 5 minutes at 425 degrees then turn the oven to 375 degrees and continue baking for 12-15 minutes, until the center of the muffins are baked.°

Step 7

Let cool for 5 minutes then remove from the muffin tin to a wire rack.