1 c. drained tomatoes, chopped very fine
1 (8 oz.) pkg. cream cheese, softened
8 oz. Cheddar cheese, grated
1/2 c. chopped onion
1 tsp. salt
1/8 tsp. red pepper
1/4 tsp. garlic powder (or to taste)
8 oz. chopped walnuts

Mix well and refrigerate.