These Maple Walnut Cream Cookies are a delicate balance of nutty walnut and maple flavour, and sandwiched with a deliciously smooth maple buttercream, for a true Canadian classic treat.
In a large bowl with an electric mixer cream the butter with the sugar until light and fluffy. Add the egg, vanilla, maple extract, baking powder, and salt and mix on medium speed until well combined. Add the flour and ground walnuts, and mix on medium speed until well combined and the mixture sticks together, about 1-2 minutes.