IN A LARGE BOWL, MIX TOGETHER THE CAKE MIX, OIL, AND EGGS. (ADD THE CHOCOLATE CHIPS, IF USING THEM AND STIR WELL.) THE MIXTURE WILL BE THICK, BUT KEEP STIRRING. SPREAD THE MIXTURE EVENLY INTO THE PREPARED BAKING DISH. BAKE FOR 20 MINUTES. ALLOW TO COOL, THEN SLICE.