Texas Straw Hat

1 lb. ground beef
1 c. chopped onion
2/3 c. chopped celery
2/3 c. chopped green pepper
12 oz. can tomato paste
1 c. water
2 t. chili powder
1 t. Worcestershire sauce
1/2 t. salt
1/4 t. dried whole thyme
1/8 t. pepper
dash hot sauce
6 oz. pkg. corn chips
2 c. shredded cheddar cheese

Combine ground beef and vegetables in large skillet; cook until meat is browned, stirring to crumble. Drain off pan drippings. Stir in remaining ingredients except chips and cheese; bring to a boil. Cover, reduce heat, and simmer 20 minutes, stirring occasionally. Serve over corn chips, and top with cheese.