These soft and buttery baked onions have an incredibly sweet flavor and make a delightful side dish to any main you're serving, from a juicy grilled steak to a flaky poached fish. Easy to make, the onions require just a simple preparation and one hour in the oven. This will give you enough time to make the rest of the dishes you're serving and make a fuss-free meal that looks as impressive as it is delicious. Just five ingredients, which you actually might already have at home, compose this recipe. Sweet onions such as Vidalia tend to run on the larger side, so choose onions that are big enough to serve as a vegetable side per person, but not too big, as too much onion on one plate can overwhelm the palate and distract your guests from the rest of the meal. If what you find are really large onions, then choose one per every two guests.