8 oz. shell macaroni
1 pkg. imitation crab salad style
1/4 c. chopped onions
5 oz. frozen peas, slightly cooked
1 sm. chopped tomato
1/4 c. Miracle Whip
1/4 c. sour cream
1 1/2 tsp. Dijon mustard
1 tsp. vinegar
1/2 tsp. salt
1/4 tsp. pepper