Sheet-Pan Banana Pancakes

Preheat oven to 425°F. Coat a 13-by 9-inch baking pan or baking sheet with cooking spray, then line with parchment paper and coat again.

Mash bananas in a large bowl. Whisk in eggs, water and cinnamon. Use a wooden spoon to fold in pancake mix; stir until just combined.

Spread the batter in an even layer in the prepared pan. Bake until a toothpick inserted in the center comes out clean, 12 to 14 minutes. Let cool in the pan for 3 minutes, then cut into 12 squares.