1 1/4 cups all-purpose flour
1/4 cup sugar
1/2 cup cold margarine or butter
1 can Eagle Brand® Sweetened Condensed Milk (NOT evaporated milk) — (14-ounce)
1/4 cup unsweetened cocoa
1 egg
1 teaspoon vanilla extract
1/2 teaspoon baking powder
1 milk chocolate bar — (8-ounce) broken into chunks
3/4 cup chopped nuts (optional)
Preheat oven to 350º. Line 13×9-inch baking pan with foil; set [...]

