Texas Sombreros

Ingredients

• 1 lb. ground beef
• 1 tsp. salt
• 1/2 tsp. pepper
• 1/2 tsp. steak sauce
• 1 to 2 chili powder
• 1 (8 oz.) can tomato sauce
• 2 Tbsp. butter
• 1/2 c. chopped celery
• 1/4 c. chopped onion
• 1/4 c. chopped green pepper
• 2 c. (1 lb. can) tomatoes
• 1 tsp. sugar
• shredded lettuce
• chopped tomato
• grated cheese
• large corn chips