Oriental Casserole

Ingredients

• 2 c. cooked rice
• 4 Tbsp. butter
• 1 small onion, cut into thin wedges
• 1/2 c. chopped carrot
• 1/2 c. thinly sliced celery, cut on diagonal
• 1 clove garlic, minced
• 1 lb. ground beef
• 1 (8 oz.) can sliced water chestnuts, drained
• 3 Tbsp. all-purpose flour
• 1 2/3 c. water
• 2 Tbsp. soy sauce
• 1 tsp. instant beef bouillon granules
• 1/4 tsp. ground ginger
• 1/4 tsp. pepper
• 1 c. chow mein noodles
• soy sauce