https://www.cutoutandkeep.net/projects/double-chocolate-peanut-butter-swirl-muffins • Posted by elsellin
Preheat oven to 350 degrees. Prepare a 12 cup muffin tin with non-stock spray or liners.
Combine flour, brown sugar, cocoa powder, baking powder, baking soda, and salt. Set aside. In a separate bowl mix together water, canola oil, egg, and vinegar. Stir in chocolate chips. Pour into flour mixture. Stir until just combined. Pour into muffins tin.
Microwave peanut butter for 20 seconds to make it easy to swirl. Drop a teaspoonful into the center of each muffin. Using a knife or toothpick swirl into muffin. Bake for 12-14 minutes. Allow to cool in the pan for a few minutes before serving.