Tex-Mex Style Enchiladas

Yield:	6 Servings
Categories:	Meats, Tex-mex

2	lb	Ground beef, extra-lean (as little fat as possible)
2	md	Onions, chopped
4	tb	Flour
2 1/2	c	Enchilada sauce (2 standard cans)
1	lb	Cheddar cheese, sharp, grated