Try this homemade Onion Sauce recipe the whole family will love. Made with white onions, milk, butter and salt. Easy step-by-step instructions included.
This Onion Sauce relies on simple, everyday ingredients such as or 4 white onions, pt. milk, butter, half the size of egg and salt and pepper to taste. It comes together quickly and makes 4 servings, at about 51 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.
Updated Jun 30, 2026