Beat the softened cream cheese and butter for 1 minute with a stand mixer.
Add the maple extract, starting with 2 teaspoons (use 1 extra teaspoon to taste). Mix until combined well.
Slowly add in the powdered sugar, 1 cup at a time. Continue slowly mixing until the powdered sugar is combined well. Mix by hand for a minute, scraping the sides and bottom of the bowl well.
With the stand mixer, slowly add in the heavy whipping cream. Mix the icing by hand, to check the consistancy. *This is usually enough cream for the right texture, but to make the icing more creamy and a little thinner you can add in a few tablespoons of heavy whipping cream. Mix the icing until all ingredients are well incorporated.
