Nothing has to be exact. Mash 1 large or 2 small bananas in a bowl. Mix in 1 cup pancake mix. Combine lightly to moisten the mix. Stir in enough water to make it the texture of thick potato soup (nothing's exact). It will be less water than the box recipe calls for. Don't overmix it. Let the batter rest for 15 minutes. Cook normally. Banana pancakes are best as small pancakes. I use a 1/4 cup measuring cup to pour the batter. You can spoon berries over the top if you wish.