Hawaiian Beef
["1 (13 1/4 oz.) can pineapple chunks (in juice)", "2 Tbsp. cornstarch", "1 Tbsp. brown sugar", "1 Tbsp. soy sauce", "1/4 tsp. pepper", "2 Tbsp. oil", "1 lb. beef round steak, cut into strips", "1 medium green pepper, cut into 1/4-inch strips", "2 medium tomatoes, cut into wedges"]
["Drain pineapple chunks; reserve juice.", "Combine cornstarch, sugar, soy sauce and pepper; reserve.", "Stir-fry beef with oil in a wok or skillet until brown.", "Add green pepper and 2 tablespoons water to wok.", "Stir-fry for 2 minutes.", "Add pineapple chunks, juice and tomatoes to the wok.", "Add the reserved mixture.", "Cook, stirring, until sauce thickens.", "Serve over rice."]
["pineapple", "cornstarch", "brown sugar", "soy sauce", "pepper", "oil", "beef round steak", "green pepper", "tomatoes"]