In a large mixing bowl using an electric mixer on medium speed, cream together
butter, peanut butter, granulated sugar and brown sugar until fluffy. Add egg and
mix to combine. Reduce speed and add Bisquick, mixing thoroughly. Stir in toffee
Shape into 1-inch balls and bake 10 to 12 minutes.
Remove to a wire rack
In a small saucepan over low heat, whisk together Nutella, milk and confectioners'
sugar until smooth.
Dip cookies into glaze and remove to wax paper to cool completely.