1 pk Hidden Valley Ranch (R) Salad dressing mix 1/2 ts Dill 3/4 c Salad oil 5 c Plain oyster crackers 1>. Preheat oven to 250 deg.F. Combine salad dressing mix with dill and oil. Pour over crackers, stir to caot. Place in oven for 15 to 20 minutes. Stir gently halfway through baking.