Chocolate Streusal Bars

1 2/3 c. flour                                              1 egg
1 c. sugar                                                  1 can sweetened condensed milk
1/4 c. cocoa                                              12 oz. chocolate chips
1/2 c. butter, softened

Preheat oven to 350 degrees.  Grease a 9x13 pan.  Mix flour, sugar, cocoa, butter and egg; cutting butter mixture to make coarse crumbs.  Reserve 1 1/2c. mixture.  Put the rest into pan and press down.  Bake 10 minutes.  Melt 1c. chocolate chips and sweet milk in microwave (1-2 min.).  Melt until smooth when stirred.  Pour over baked crust.  Add rest of chips to the reserved crumb mixture.  Sprinkle over top.  Bake 25 min. or until center is almost set.  Cool completely.