Step 1

Preheat oven to 350 degrees F. Coat an 8- x 8-inch baking dish with cooking spray.

Step 2

In a large bowl, beat brown sugar and butter until creamy. Beat in peanut butter, egg, and vanilla. Add flour, baking soda, and salt; mix well. Stir in 1/2 cup bacon and 1/3 cup peanuts. Spread into prepared baking dish.

Step 3

Bake 20 to 25 minutes, or until a toothpick inserted in center comes out clean. Remove from oven and sprinkle with chocolate chips. Return to oven and bake 1 additional minute.

Step 4

Immediately spread melted chocolate over top. Sprinkle with the remaining bacon and peanuts. Let cool completely, then cut into squares.