Hot Shrimp Cocktail

Ingredients

• 1/2 c. finely chopped onion
• 1 1/2 Tbsp. butter
• 1 3/4 c. canned tomatoes, chopped
• 1/2 c. green pepper, chopped
• 1/3 c. crumbled saltine crackers
• 1 tsp. salt
• 1/8 tsp. pepper
• dash of hot pepper sauce
• 1/8 tsp. nutmeg
• 1/8 tsp. thyme
• 1/8 tsp. mace
• 1 lb. raw shrimp, shelled and deveined
• 1 hard-cooked egg
• parsley (for garnish)