Fluffy Peanut Butter Frosting With Milk Chocolate Drizzle

1/2 cup salted butter (softened)

1 pound of powdered sugar

1 cup of heavy cream

1 1/4 cups creamy or chunky peanut butter

2 tsp. vanilla

½ cup salted butter

1/3 cup milk

4 Tbsp. unsweetened baking cocoa

1 pound powdered sugar

1 Tbsp. vanilla