- Preheat oven to 350 degrees
- Combine first 4 ingredients in a large mixing bowl, beat at medium speed for 2 minutes
- Press half of mixture onto the bottom of a lightly grease 8x8x2 pan.
- Bake for 10 min.
- Sprinkle with chocolate chips & pour on sweetened condensed milk
- Top with remaining cake mixture.
- Bake for 30 min; cool completely on wire rack.
- Cut into squares and serve.