For the Bars
- 1 (17.5 oz) package sugar cookie mix
- ½ cup salted butter, softened
- 1 large egg
- 2 teaspoons pumpkin pie spice
- 2 teaspoons vanilla extract
- ½ cup white chocolate chips
- ½ cup pumpkin baking chips
Vanilla Buttercream With a Twist
- ½ cup salted butter, softened
- 3 cups powdered sugar
- 2–3 tablespoons heavy cream
- 1 ½ teaspoons vanilla extract
- Pinch of pumpkin pie spice
Topping