1 med. onion, chopped
1/2 c. chopped celery (with leaves)
1 clove garlic, crushed
3 tbsp. butter
2 (16 oz.) cans crushed tomatoes, with juice
2 tbsp. minced parsley
1/4 tsp. each salt, pepper & thyme
1/2 c. dry white wine (optional)
1 lb. fresh fillets (any firm fish), cut into 1/2" cubes

Saute onion, garlic and celery in butter until tender. Add tomatoes, wine and seasonings. Cover and simmer for 20 minutes. Add the fish and simmer 10 more minutes.