1 sm. onion, chopped
2 lb. ground beef
2 (6 oz.) tomato paste
1/2 c. ketchup
2 c. water
2 tsp. Worcestershire
1 1/2 tsp. chili powder
1 tsp. salt
1/2 tsp. thyme
1/4 tsp. pepper
Corn chips
Lettuce
Cheese

Brown onion and ground beef together. Add remaining ingredients. Simmer 1 hour, uncovered; stir occasionally. Serve on corn chips. Top with shredded lettuce, cheese.