Slow Cooker Hot Five-Cheese Lasagna

lasagna noodles, uncooked*

lean ground beef

hot Italian sausage

ricotta cheese

shredded aged asiago cheese

cubed fresh asiago cheese**

mozzarella, sliced (reserve a few slices for top)

grated romano or parmesan cheese

hot red pepper flakes

jar (24 oz) pasta sauce of your choice (I used plain)

water