Ada and Anna's Maple Sandwich Cookies {Whoopie Pies}

INGREDIENTS

1/2 cup

butter (softened)

1 cup

brown sugar

eggs

1 tsp

maple flavour

1 tsp

baking soda

1/2 tsp

salt

3 tbsp

heavy cream

2 3/4 cups

sifted flour

2 cups

softened butter (or 2 cups shortening and 2 teaspoons butter flavouring, as Ada makes it.)

2 cups

marshmallow fluff (store bought or [url:1]homemade. [/url)

2 tsp

maple flavouring

2 tsp

vanilla extract

5 1/2 cups

powdered sugar

1/4 cup

whole or evaporated milk (or more as needed)