Funfetti Bar Cookies

¾ cup soft butter
⅓ cup vegetable oil
⅓ cup sour cream
1 cup granulated sugar
1 cup powdered sugar
2 eggs
2 teaspoons vanilla or coconut extract
3 ½ cups flour
1 ½ teaspoons baking powder
¾ teaspoon salt
¾ cup sprinkles

Preheat oven to 350 degrees. Cream butter, oil, sour cream, and sugars with an electric mixer on medium-high for 1 minute or until fluffy. Hand stir in eggs, and extract; don’t overmix. Add dry ingredients all at once and mix until fully incorporated. Add 2-3 Tablespoons more flour for high elevation. Stir in sprinkles. Spread dough into 9 x 13’ aluminum baking pan sprayed with baking spray. Bake at 350 degrees for 20+ minutes. 
Let cool completely. Frost with Marshmallow Creme Frosting.
Let set. Share!

Marshmallow Creme Frosting
¼ cup soft butter
1 ½ cups powdered sugar
1 teaspoon vanilla extract
½ cup whipping cream
Dash of salt
7oz. marshmallow creme (Fluff)

Beat butter, powdered sugar, vanilla, whipping cream until smooth.  Mix an additional 2-3 minutes on high speed.  Fold in marshmallow creme.