Step 1

Heat oven to 350°F. Grease bottom of 13x9-inch pan with cooking spray.

Step 2

In large bowl, beat the sugar cookie mix, cake mix, melted butter, eggs and 1 teaspoon vanilla with electric mixer on low speed 30 seconds. Turn the mixer to medium speed for about 1 minute more or until blended.

Step 3

Spread the sugar cookie mixture into the pan.

Step 4

Bake for about 30 minutes or until golden brown.

Step 5

Cool completely, about 1 1/2 hours.

Step 6

Use my sugar cookie frosting to frost the bars and top with Christmas sprinkles.