Toss Monterey Jack cheese with flour; place in theibottom of a greased 13-in.x 9-in.x 2-in.baking dish.
Top with cheddar cheese; sprinkle with bacon.
Beat eggs and milk; pour over all.
Cover and chill 8 hours or overnight.
Remove from refrigerator 30 minutes before baking.
Bake, uncovered, at 325° for 40-45 minutes or until a knife inserted near the center comes out clean.
Let stand 5 minutes before cutting.