For the Cupcakes:
- 1 and 1/2 cups (188g) all-purpose flour
- 1 teaspoon baking powder
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1/2 cup (100g) granulated sugar
- 1/3 cup (75g) unsalted butter, softened
- 2 large eggs, at room temperature
- 2 ripe bananas, mashed (about 1 cup)
- 1/4 cup (60ml) milk
- 1 teaspoon vanilla extract
For the Peanut Butter Frosting:
- 1/2 cup (125g) peanut butter
- 1/4 cup (56g) unsalted butter, softened
- 1 and 1/2 cups (180g) powdered sugar
- 2–3 tablespoons milk
- 1/2 teaspoon vanilla extract
For Topping:
- 1/2 cup caramel sauce
- 1/4 cup chopped peanuts