S'more Brownies

Yummy Yummy! I can't even tell you how amazingly delicious these are. I got them on Kraft's website and I am in LOVE! It is now a family staple.

10 graham crackers, broken in half (20 squares), divided
3/4 cup (1-1/2 sticks) butter or margarine
4 squares Unsweetened Chocolate
2 cups sugar
3 eggs
1 tsp. vanilla
1 cup flour
2-1/2 cups Miniature Marshmallows (I used about 5 cups)
1 cup Semi-Sweet Chocolate Chips

Make It
HEAT oven to 350°F. Line 13x9-inch baking pan with foil; grease foil. Place 15 grahams in pan, overlapping slightly. Break remaining grahams into pieces; set aside.
MICROWAVE butter and chocolate in large microwaveable bowl on HIGH 2 min.; stir until melted. Add sugar, eggs and vanilla; mix well. Stir in flour. Pour over grahams in pan.
BAKE 30 to 32 min. or until toothpick inserted in center comes out with fudgy crumbs. (Do not overbake.) Sprinkle with marshmallows and chocolate chunks. Bake 3 to 5 min. or until marshmallows begin to puff. Press reserved graham pieces gently into marshmallows. Cool. Use foil to remove brownies from pan before cutting to serve.