Here's a good crocpot recipe. I can't remember where I got it from. It may have been posted here from someone else (but I ususally keep track of who posts the recipes here that I like), or it may have come from a crockpot cookbook.

CROCKPOT LAYERED ENCHILADA CASSEROLE1 can whole tomatoes
1 small onion, cut into pieces
1 clove garlic, minced
1/2 tsp. ground red pepper
1/2 tsp. salt
1 (6 oz.) can tomato paste
1 lb. ground beef, browned
2 c. shredded cheddar cheese
9 corn tortillas

Blend tomatoes (undrained), onion and garlic in blender or food processor. Pour into med sauce pan. Add red pepper, salt and tomato paste. Heat to a boil; simmer for 5-10 min. Place 3 tortillas in bottom of crockpot. Layer on tortillas 1/3 of the ground beef, 1/3 of the sauce and 1/3 of the cheddar. Repeat layers two more times. Cover and cook on Low 6-8 hours.