Banana Chocolate Chip Cake with Peanut Butter Frosting

INGREDIENTS

For the cake

2 1/2 cups

all-purpose flour

1 1/2 tsp

baking powder

1 1/2 tsp

ground cinnamon

3/4 tsp

baking soda

1/2 tsp

fine salt

2 sticks

unsalted butter (227 grams), at room temperature

1 cup

granulated sugar

1/2 cup

light brown sugar

1 tsp

vanilla extract

large eggs, at room temperature

1/2 cup

sour cream

medium overripe bananas, mashed

1 1/4 cups

miniature chocolate chips

For the frosting

2 sticks

unsalted butter (227 grams), at room temperature

1 cup

creamy peanut butter

1 tsp

vanilla extract

1/8 tsp

fine salt

2 1/2 cups

powdered sugar, sifted

Chocolate chips, for garnish, optional