1 pkg. Pillsbury Plus yellow cake mix
1/2 c. butter, softened
1 egg

FILLING:

1 (14 oz.) sweetened condensed milk
1 egg
1 tsp. vanilla
1 c. pecans, chopped
1/2 c. Heath Bits-o-Brickle baking chips

Set oven to 350 degrees. Grease a 9 x 13 inch pan. Combine base ingredients, mix at high speed until crumbly. Press into pan. Beat milk, egg and vanilla into small bowl until blended; stir in pecans and chips. Pour over base. Bake for 25 to 35 minutes, until light golden brown. Center may appear loose but will set upon cooling. Cool.