M&M cookie bars

1 1/2 cup brown sugar
1 cup sugar
1 cup butter, melted
1 tbsp vanilla
2 eggs
3 1/2 cups flour
2 tsp baking soda
1 tsp salt
2 cups m&ms

Heat oven to 375 degrees. Beat together all ingredients (except the m&ms) until smooth. Stir in candy. Spread into a 13x9 inch baking pan/stone. Bake 20-30 minutes, or until slightly browned around the edges.