Step 1

In a large bowl, combine the bananas and oats. Let stand for 15 minutes.

Step 2

Meanwhile, preheat the oven to 350F (180C). Line a 9-inch (22.5 cm) baking pan with parchment paper (spray or grease the exposed interior sides).

Step 3

After 15 minutes have passed, vigorously stir the bananas and oats, breaking down the oats and creating a relatively creamy mixture.

Step 4

Add the almond flour, baking powder and optional salt to bowl (if using, add vanilla and/or cinnamon, too). Stir until completely combined.

Step 5

Spread the dough in the prepared pan, smoothing the top. Sprinkle the top with the chocolate chips.

Step 6

Bake in the preheated oven for 22 to 25 minutes until the center is set and the edges are golden brown. Cool completely on a cooling rack.

Step 7

Use the parchment paper to remove the bars from the pan. Cut into 16 squares or bars.