Here they are: 5 Ways to SAVE TIME in the kitchen Always fill your oven full. Don’t waste the time and energy cooking only 2 chicken breasts and 2 potatoes, go ahead and cook a full pan of each so that you have quick, healthy options to grab when things get hectic. You can roast just about anything at 400 degrees, with the time depending on the type of food. Make a double batch of all dressings/sauces. Dressings and sauces are very versatile and most can last for over a week in the fridge. If you are going to spend the time assembling a homemade sauce, optimize those minutes by doubling your output.