Asparagus Casserole, made with fresh asparagus, is creamy and rich with a crunchy fried onion topping.

Asparagus Casserole in a baking dish.

Perfect For Spring and Easter

A creamy and rich Asparagus Casserole with fresh asparagus and a crunchy fried onion topping is the perfect spring casserole and would be a great addition to your Easter menu.

Other Ingredients

In addition to fresh asparagus, this casserole has mushrooms, onion, sour cream, mayonnaise, and two kinds of cheese. How can it not be good?

No cream of anything soup is needed. Instead milk is added to a butter and flour roux.

The crunchy onion topping is my favorite. In addition to scattering them on top, I also like to crush some fried onions and mix them into the casserole. Not only do they provide flavor, but they act as a thickener as well.

Finished casserole in a baking dish.

Make Ahead

As a time saver, this casserole can be assembled a day in advance and baked just before serving.

It’s a rich and decadent spring casserole and there’s no better way to enjoy fresh asparagus.

Large spoon scooping Asparagus Casserole out of baking dish.

More Asparagus Recipes

Asparagus Casserole

4.67 from 15 votes

By Christin Mahrlig

Prep: 20 minutes
Cook: 30 minutes
Total: 50 minutes
Servings: 8 servings
Asparagus Casserole, made with fresh asparagus, is creamy and rich with a crunchy fried onion topping.
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Ingredients

  • 4 tablespoons (1/2 stick) butter
  • 2 1/2 pounds asparagus,, trimmed and cut into 1-inch pieces
  • 1 (8-ounce) package white mushrooms,, sliced
  • 1/2 medium sweet onion,, chopped
  • 1/4 cup all-purpose flour
  • 1 1/4 cup milk
  • 1/2 cup mayonnaise
  • 1/2 cup sour cream
  • 1/2 cup shredded cheddar cheese
  • 1/2 cup shredded swiss cheese
  • 1/2 teaspoon salt
  • 1/2 teaspoon lemon pepper
  • 1/4 teaspoon paprika
  • 1 (6-ounce) can french-fried onions.

Instructions 

  • Grease a casserole dish and preheat oven to 350 degrees.
  • Melt butter in a large pan over medium heat. Add asparagus, mushrooms, and onions and cook, stirring occasionally, for about 6 minutes.
  • Sprinkle flour over vegetables and cook, stirring continuously, for 1 to 2 minutes.
  • Gradually stir in milk. Cook until thickened.
  • Reduce heat to low and mix in mayonnaise, sour cream, both cheeses, salt, lemon pepper, and paprika. Remove from heat.
  • Crush about 1/3 of the can of french-fried onions and mix them into the asparagus mixture.
  • Transfer mixture to prepared casserole dish.
  • Sprinkle remaining french-fried onions on top.
  • Place in oven and bake for 30 minutes.

Video

Nutrition

Calories: 368kcal

Nutrition information is automatically calculated, so should only be used as an approximation.

Did you make this?Leave a comment below and tag us @spicysouthernkitchen on social media!

 

Originally posted March 8, 2016.

Disclosure: This post contains affiliate links.

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Recipe Rating




42 Comments

  1. Maryann says:

    Used Greek yogurt instead of sour cream and heavy cream 1 cup instead of milk due to not having the ingredients. Turned out great! Planning to make fried onions and hope it goes well versus the store bought one.

    1. Haley says:

      What size pan do you use

  2. Daphine says:

    Please let me recieve mail from you

    Thanks

  3. Lesa says:

    Loved this. Very tasty and easy to make. Will be one of our go to recipes. Definitely would serve for guests … if I want to share!!

  4. Judy says:

    WOW! This is so delicious! I will be making this for Easter 2018 and I’m sure it will be the best dish at our family potluck!! Thank you so much for this recipe!!

  5. Debby says:

    I am trying this recipe tonight. Instead of French fried onions which I do not have, I will used crushed bacon for crunch and yum. Forhe topping, I will used crushed Ritz crackers sprinkled with butter. Can’t wait! Thanks for the recipe!

  6. Kathy kohnke says:

    I have been making this for years , except I chop up boiled eggs and shredded cheddar cheese.use cream of mushroom soup salt pepper. (Kind of like green bean casserole) Top with sliced boiled eggs.. also add mushrooms. The eggs make it really creamy.

    1. Christin Mahrlig says:

      I will have to try it with eggs Kathy! ๐Ÿ™‚

  7. Regenia Goff says:

    I was looking for asparagus recipes and found your web site. I found 2 that sound awesome and asparagus is in season. My question is, have you ever tried freezing asparagus? If so, would you share?

    1. Kristen says:

      Not sure that you can freeze asparagus. From what others have told me, it thaws out mushy. Never tried it myself though and you can’t believe everything you hear! Albertsons had asparagus on sale for 1.49 a pound a week or so ago and I wanted to try it in the freezer. Next time I definitely will!

    2. Tom says:

      Yes you can freeze asparagus. Blanch it for 2.5 minutes, then immediately cool it in ice water to stop it from cooking. Dry spears thoroughly with paper towels and spread them out on a cookie sheet. After freezing pack them in freezer bags before they begin thawing (vacuum packing is even better), and place in freezer immediately.

  8. Roland says:

    I just saw this great looking recipe. I would probably add some water chestnuts to give it a little more crunch. I look forward to trying it.

  9. Dave Freeman says:

    Yes indeed a really fine recipe and great alternative to that old nasty green bean casserole
    This is delicious , creative and most of all no cream of mushroom soup
    I love we get to make our own mushroom mixture
    Way to go Christin
    Thanks ,
    Dave and family

  10. Kassie says:

    This looks delicious! Going to make for Thanksgiving! Do you think I could prep the day before (do all stovetop cooking then refrigerate overnight) and bake right before serving?

    1. Christin Mahrlig says:

      Yes, I think that would work just fine Kassie.

      1. Kassie says:

        Great! Do you think it would freeze well?