1 (21.5 oz.) box fudge brownie mix
1/4 c. vegetable oil
3 (5 oz.) Cadbury milk chocolate bars
1/2 c. water
1 egg

Put brownie mix into a large bowl; add water, oil and egg. Mix thoroughly until blended. Spread half of batter into a greased 9 x 13 inch pan. Lay chocolate bars on top. Spread remaining batter on top. Bake in a 350 degree oven for 35 minutes. Cool and cut into squares.