1 lb. lean ground beef
1 sm. onion, chopped
1/2 tsp. garlic powder
1 env. (1.5 oz.) taco sauce mix
1 can (8 oz.) tomato sauce
1 c. sour cream
1 c. cottage cheese
2 c. tortilla chips, crushed
2 c. grated Monterey Jack cheese

Brown beef in a saute pan and drain, remove from heat. Add next 4 ingredients to beef. Combine sour cream and cottage cheese in a separate bowl. Place 1/2 of crushed chips in the bottom of a 2 1/2 quart casserole dish. Add enough meat mixture to cover the chips, then cover meat with 1/2 of the sour cream mixture. Sprinkle with 1/2 grated cheese. Repeat layers. Bake uncovered at 350 degrees for 30-35 minutes.