Vidalia Onion Casserole – a creamy, cheesy sweet onion filling is topped with a buttery cracker crumb topping to make a fantastic spring side dish casserole.

Typically onions are used in small amounts to flavor other ingredients. But I love them as the star of the show. Especially sweet onions. Their flavor is so mild and delicious.

Do I Have To Use Vidalia Onions"

No. You can use any type of sweet onion for this recipe. You do want to be sure to use a sweet onion though and not a yellow or white onion.

How To Make Vidalia Onion Casserole

Cut the onion. Whether you slice or dice the onion doesn’t really matter. You want them to be cut up enough that the casserole is easy to eat but you don’t want to dice them too small or slice them too thin.
Boil the Onion. This precooks the onion a little and gets the onion even milder in flavor.

Cook the onion in butter. You’re not trying to caramelize the onion, just get them soft. Five minutes is plenty of time.

Mix together the filling. Whisk together egg and evaporated milk. Then add in Ritz crackers, cheddar cheese, Parmesan cheese, salt, pepper, and onions.

Assemble and bake. Transfer to a baking dish, add cracker topping and bake 20 to 25 minutes.

Make It Spicy

If you want to make this casserole spicy, add 1/4 to 1/2 teaspoon of cayenne pepper or crushed red pepper flakes.

How To Serve Vidalia Onion Casserole

This casserole goes great with any me...