Ingredients
                
                4 cups fresh or frozen blueberries
1 cup sugar
1 T cornstarch
2 tsp. vanilla
1 pkg French vanilla cake mix
1/2 cup butter
1/3 cup chopped pecans
             
      
            
                
                    
Instructions
                
                In a greased 5 qt slow cooker, combine blueberries, sugar and cornstarch. Stir in vanilla. In a large bowl combine cake mix and melted butter. Crumble over blueberries. Top with pecans.  Cover slow cooker with a double layer of paper towels, place lid securely over towels. Cook on low 3-4 hours or until topping is set.