There's no recipe here. Just a cool trick I learned from a lady at church.
Make a brownie batter, even one from a box if you must. Place half of your batter in your pan. Top the batter with a chocolate bar. Here I've used Hershey's with almond because I got a great deal on them. Symphony bars are even better.
Top off with your remaining brownie batter. Make sure to cover all the chocolate. Bake as usual. BEST BROWNIES EVER!