15 Baked Onion Casserole Recipes

What should I make for dinner tonight? This might just be the number one question that we ask ourselves almost daily over here.

Then you have come to the right place, we have rounded up 15 baked onion casserole recipes that we have shared over the years.

Plus, there is such a variety of flavours in these recipes, so you are sure to find something for you. Most of these recipes are quick and easy ones made especially for busy weeknights.

15 Baked Onion Casserole Recipes

Sweet Onion Casserole

Sweet Onion Casserole

40 min
Parmesan cheese, butter flavored, sweet onions
4.97
Taste of Home
Vidalia Casserole

Vidalia Casserole

35 min
Sour cream, parmesan cheese, butter flavored, sweet onions
4.98
Taste of Home
French Onion Casserole

French Onion Casserole

1 hr
Apple cider vinegar, ziti pasta, white cheddar cheese, heavy cream, worcestershire sauce
3.01
Real Simple
Tennessee Onions

Tennessee Onions

35 min
Vidalia onions, sharp cheddar cheese, mozzarella cheese, parmesan cheese, garlic salt
5.029
Loaves and Dishes
Classic Baked Vidalia Onions

Classic Baked Vidalia Onions

50 min
Beef bouillon cube, vidalia onion, butter
5.07
The Cookful
Cheesy Baked Onions

Cheesy Baked Onions

1 hr
Cheddar cheese, butter, all purpose flour
4.52
Taste of Home
Sweet Onion Casserole

Sweet Onion Casserole

Mushroom soup, potato chips, cheddar cheese
4.05
Mr. Food
French Onion Soup Casserole Recipe

French Onion Soup Casserole Recipe

1 hr 50 min
Vidalia onions, beef broth, sherry, bay leaves, all purpose flour
4.76
Southern Living
Tennessee Sweet Onion Casserole

Tennessee Sweet Onion Casserole

1 hr 15 min
Mushroom soup, potato chips, sweet onions, giant eagle
No reviews
Giant Eagle
Vidalia Onion Soufflé Recipe

Vidalia Onion Soufflé Recipe

1 hr 15 min
Evaporated milk, vidalia onions, parmesan cheese, butter, bread cubes
5.01
Southern Living
French Onion Beef Casserole

French Onion Beef Casserole

French onion dip, mushroom soup, lean ground beef, egg noodles, french’s fried onions
4.878
Life In The Lofthouse
Candie's Easy Potato and Onion Dish

Candie’s Easy Potato and Onion Dish

55 min
Potatoes, sweet onions
4.248
Allrecipes
French Onion Chicken Bake

French Onion Chicken Bake

1 hr
Balsamic vinegar, chicken breasts, beef broth, mozzarella cheese, butter
4.5751
My Organized Chaos
French Onion Soup Casserole

French Onion Soup Casserole

2 hr 5 min
White wine, gruyere cheese, beef broth, olive oil, bay leaves
4.65
Food Network
Slow Roasted Baked Onions + Video

Slow Roasted Baked Onions + Video

1 hr 5 min
Red wine vinegar, brown sugar, red pepper flakes, butter, fresh rosemary
4.934
Kevin Is Cooking

Which onions are best for casseroles?

All onions are not created equal, so the onion you pick can really make a difference to the dish. I know this is a sweet onion casserole, but you don’t want to use a sweet onion like Vidalias. They don’t have enough flavor. The best onions for this dish are you basic yellow onions or brown onions.

Will raw onions cook in a casserole?

Carrots, onions, and other root vegetables make excellent additions to any casserole. Because everything is cooked together, casseroles are an excellent way to spice up somewhat bland vegetables.

What temperature do you cook a casserole in the oven?

Again, any recipe will give you the oven temperature and baking time, but if you are making up your own casserole, don’t cook it lower than 300 or higher than 400 degrees F. Casseroles generally do best at a moderately hot heat, especially if the ingredients are already cooked.

What can you make with a lot of sweet onions?

Sweet Onion Recipes

  • Roasted Sweet Potatoes & Onions. Save. …
  • Grandma’s Onion Rings (Southern Style) Save. …
  • french onion soup in a bowl with melted cheese. Save. …
  • Corn, Sweet Onion, and Tomato Salad. Save. …
  • Vidalia Sweet Onion Dip. Save. …
  • Roasted Beets ‘n’ Sweets. Save. …
  • Grilled Onions and Potatoes. Save. …
  • Baked Onion Dip I. Save.

How long do onions last in the fridge?

Store cut onions in the refrigerator (or even the freezer)… You can hang on to a halved or sliced onion in an airtight container in the fridge for about one week. Store them in an airtight container (preferably a glass one, as plastic will absorb odor) to decrease oxidation, moisture absorption, and stinkiness.

What’s the difference between a sweet onion and a yellow onion?

Larger and slightly flatter than yellow onions, with lighter colored, less opaque skin, sweet onions contain extra sugar, making them good for caramelizing. Their larger size and sweeter flavor make them ideal for making onion rings.

Should I saute onions before adding to casserole?

While certain vegetables can work just fine added directly to simmering soups and stews (say, carrots and celery), other vegetables (onions, garlic, and the like) will almost always need at least a brief sweat in a fat-based liquid before adding the remaining ingredients.

How long does it take onions to cook in the oven?

Adjust oven rack to lowest position; heat to 425 degrees. Cut onions in half; toss with oil and a generous sprinkle of salt and pepper. Place, cut-side down, on a lipped cookie sheet. Roast until tender and cut surfaces are golden brown, 25 to 30 minutes.

Should a casserole be covered when baking?

Generally, casseroles with grains, rice or pasta that will cook during the baking process are usually covered, for at least part of the time. Casseroles made of cooked ingredients are usually baked uncovered. If you like a crisper, browner top, be sure the casserole is uncovered for at least part of the bake time.

Do you leave the lid on when cooking a casserole?

But a general rule of thumb is that if your recipe is quite soupy or full of liquid, then leave the lid off. This allows the moisture to reduce in the recipe. For less soupy recipes, you may want to leave the lid until the very end when taking it off can finish the dish off with a nice browning of the top.

What’s the difference between a casserole and a stew?

There is little difference between a casserole and a stew. A purist would say that a casserole goes in the oven, heating the dish from all directions, while a stew goes on the stovetop and is heated from the bottom. Another point of difference is a casserole is the name of the pot used for cooking.

How do you thicken a casserole in the oven?

Make a cornstarch slurry for a fast and easy thickener.

Use one tablespoon of cornstarch per cup of liquid you would like to thicken. Stir out all the lumps. A few minutes before your casserole is done, add it a little at a time until you are happy with the thickness. Then, let the casserole finish baking.

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