In the bowl of a stand mixer, cream together the butter, oil and sugar until creamy and smooth, about 1 minute. Add in the powdered sugar, vanilla and maple extracts and beat to combine. Beat in the eggs, baking soda, cream of tarter, salt and flour until a soft dough forms. Cover and refrigerate for at LEAST 2 hours, up to overnight. Chilling is MANDATORY.

Preheat oven to 350 degrees F. Line 2 baking sheets with parchment or silicone liners. Drop rounded Tablespoonfuls of dough 2" apart on the baking sheets. Bake for approx. 9-12 minutes, rotating pans halfway through baking time to ensure even cooking. Cool on the sheets completely.

To make the frosting: In a medium bowl, whisk together the powdered sugar, maple extract and two (2) Tablespoonfuls of hot water. If mixture is too thick, add in an additional Tablespoon of hot water at a time, stirring well until smooth and glossy.

Spoon a teaspoon or two of icing onto each cookie and spread it out. Sprinkle with chocolate sprinkles if using. Otherwise, allow frosting to harden on each cookie, about 15 minutes.