Brownie Cupcakes with Peanut Butter Frosting

INGREDIENTS

Eggs, large

3/4 cup

Peanut butter do not use, creamy old-fashioned or freshly ground

8 oz

semisweet chocolate chips, semisweet

1/2 cup

All-purpose flour

3 oz

Chocolate, unsweetened

Chocolate shavings or chocolate sprinkles

1/2 cup

Golden brown sugar, packed

1 cup

Powdered sugar

1/4 tsp

Salt

1/3 cup

Sugar

1 1/4 tsp

Vanilla

1/3 cup

Walnuts, toasted

cut into pieces 6 tablespoons unsalted butter, unsalted

1/4 cup

Butter, unsalted

4 tsp

Whipping cream