Here is the cake mix I use:
Betty Crocker Gluten Free Cake Mix Yellow 15.0 oz Box,6 packs
Pumpkin Bars
1 box Betty Crocker Gluten Free yellow cake mix
1 can (15 oz) pumpkin
1/2 cup butter, softened
1/4 cup water
2 teaspoons ground cinnamon
1/2 teaspoon ground ginger
1/4 teaspoon ground cloves
3 eggs
1. Heat oven to 350°F. Lightly grease bottom and sides of cookie sheet shortening or cooking spray.
2. In large bowl, beat all bar ingredients with electric mixer on low speed 30 seconds, then on medium speed 2 minutes, scraping bowl occasionally. Spread in pan.
3. Bake 18-20 minutes or until light brown. Cool completely in pan on cooling rack, about 2 hours.
4. Spread frosting over bars. Store in refrigerator.
Cinnamon Cream Cheese Frosting
4 oz. cream cheese, softened
1/3 c. butter, softened
2 1/2 c. powdered sugar
1 tsp. vanilla extract
1/2 tsp. cinnamon