Step 1

Preheat oven to 375°F. Coat a 12-cup muffin tin with cooking spray.

Step 2

Combine oats, milk, brown sugar, bananas, eggs, cocoa, baking powder, vanilla and salt in a large bowl. Fill each of the prepared muffin cups with 2 to 3 tablespoons batter, then divide peanut butter and 2 tablespoons chocolate chips among the muffin cups. Cover with the remaining batter and press down slightly. Top with the remaining 2 tablespoons chocolate chips. Bake until a toothpick inserted in the center comes out clean, 25 to 30 minutes. Run a knife around the edges of the muffin cups to release the oatmeal cakes. Cool in the pan for 10 minutes, then turn out onto a wire rack. Serve warm or at room temperature.