Ritz Cracker Won't Believe 'Ems

40 ritz crackers
1 cup butter
1 cup light brown sugar
1 pkg milk chocolate chips (11.5 oz)
1 cup chopped pecans

Grease an 11-x-15-x-1-inch jelly roll pan and cover with ritz in singe layer. Preheat oven to 350 degrees. Melt sugar and butter together; remove from heat and beat until foamy. Pour over crackers , spreading to cover and bake at 350 degrees for 10 minutes. Remove from oven and cover with chocolate chips and pecans. Gently press into bars with the back of a spoon. Cool completely. Break or cut into serving pieces and refrigerate.