Preheat oven to 350

Melt 2 sticks of butter. While butter is cooling, prepare a 9x 13 baking dish by lining it with foil, leaving extra to hang over the sides of the dish.

Coat foil with cooking spray

Pour cooled, but not cold, melted butter into mixing bowl.

Mix in sugar, eggs, and vanilla.

Add flour and salt.

Add sprinkles. Mix until combined.

Pour mixture into prepared dish.

Bake until the edges are set, but the middle is soft, approximately 25 minutes.

Let cool. Pull bar out of pan by pulling on foil, and flip onto large plate or cookie sheet.

Frost cookie and top with additional sprinkles! Cut into squares and serve.

In large mixing bowl, mix together vegetable shortening and butter. Mix until creamy.

Alternate adding one cup powder sugar, and a little of the milk until both are fully incorporated with the shortening/butter mixture.

Add maple extract.

Mix until smooth. If frosting is too thick, add more milk, one Tablespoon at a time. If frosting is too thing, add more powder sugar, ½ cup at a time. Stir until desired consistency is reached.

Frost the maple bars.