1 (8 oz.) box macaroni shells
1 bunch (lg.) fresh broccoli
1/2 to 3/4 c. grated Cheddar cheese
1 whole onion, diced
Diced tomatoes, if desired

Boil shells as directed on box and cool. Add remainder of ingredients. Mix 1 package Good Seasons Buttermilk dressing mix to 1 cup mayonnaise and 1 cup milk (can use buttermilk). Mix together to remove lumps--this will make more dressing than needed. Pour over mixed salad; mix well and refrigerate for several hours before serving.