Halloween Sugar Cookie Bars

Directions

1. Set your oven to 350°F to preheat.
2. In a stand mixer or large bowl, beat together softened butter, vegetable oil, granulated sugar, and powdered sugar on medium speed for 2 minutes.
3. Add milk and eggs, then mix until fully combined.
4. In another medium bowl, whisk together baking powder, cream of tartar, salt, and flour.
5. Gradually add the flour mixture to the wet ingredients while beating, mixing just until combined. Avoid overmixing.
6. Lightly spray a standard baking sheet with oil.
7. Pour the batter onto the baking sheet and spread it evenly.
8. Bake for 12–15 minutes, until a toothpick inserted in the center comes out clean.
9. Let the cookie base cool for 20 minutes before frosting.
10. In a stand mixer or large bowl, cream together softened butter and sour cream until smooth.
11. Add vanilla extract and mix.
12. Slowly add powdered sugar, beating until fully incorporated.
13. Add milk 1 tablespoon at a time until the frosting reaches a pourable consistency similar to cake batter—not too runny.
14. Mix in orange food coloring (3–4 drops) until evenly colored.
15. Spread the frosting evenly over the cooled cookie base, then immediately sprinkle with Halloween sprinkles.
16. For best results, chill the bars until ready to serve.