This Asparagus and Onion Casserole blends tender asparagus and savory onions together in a creamy, cheesy casserole. It is topped with golden breadcrumbs for a delicious finishing crunch.
If you love Campbell’s green bean casserole, you will love this springtime creamy asparagus casserole.
It takes delicious fresh asparagus and blends them with cheese, onions, and a creamy sauce that gives you an easy recipe everyone loves.
I love that this can be a leftover asparagus casserole too if you grilled too many for last night’s dinner.
And it’s good for you! Asparagus is loaded with vitamins and minerals and it gives a crunch and burst of freshness to this dish.
Cheddar cheese adds a melty, gooey layer that perfectly complements the earthy flavors of asparagus and onion.
And it is finished with golden breadcrumbs mixed with butter to create a crispy topping that contrasts beautifully with the creamy casserole beneath.
With simple steps and readily available ingredients, this asparagus onion casserole is so easy to make. Whether you need an easy casserole for a quick weeknight dinner or a new dish for Thanksgiving Dinner, this is the simple side dish you are looking for.
What ingredients are in Asparagus and Onion Casserole?
- Fresh Asparagus: Adds a crisp, vibrant element to the casserole.
- Yellow Onion: Infuses sweet and savory notes into this asparagus casserole recipe.
- Butter: Provides richness and flavor to both the sautéed vegetables and the breadcrumb topping.
- All-Purpose Flour: Used to thicken the creamy sauce.
- Milk: Creates a creamy base for the sauce in this Onion and Asparagus Casserole.
- Cream Cheese: Adds a luxurious creaminess and depth of flavor.
- Salt and Black Pepper: Seasonings that enhance the overall taste of the Asparagus Onion Casserole.
- Cheddar Cheese: Melts into gooey goodness, imparting a sharp, savory kick to the Onion Asparagus Casserole.
- Bread Crumbs: Form a crispy, golden topping that adds texture and visual appeal.
Pro Tips:
- Choose fresh, firm asparagus spears with tightly closed tips for the best flavor and texture. I also like to choose thin asparagus as thick asparagus can sometimes have a woody texture.
- If you don’t have breadcrumbs, cracker crumbs like from ritz crackers work really well. You could also use crunchy fried onion if you like that flavor.
How to Make Asparagus and Onion Casserole:
- Saute asparagus and onion in a large skillet until crisp-tender then transfer to a baking dish.
- Melt butter in a saucepan over medium heat, then whisk as you sprinkle flour on top.
- Slowly add the milk to make a smooth sauce before adding the cream cheese.
- Pour the creamy sauce over the asparagus and onion, then sprinkle the asparagus mixture with cheddar cheese.
- Mix panko breadcrumbs with melted butter and scatter them over the casserole.
- Bake in the oven until the top of the casserole is bubbly and golden brown.
- Serve warm.
Pro Tip: It’s important to gradually add the milk to the saucepan. This helps to prevent clumping, giving you a smooth and creamy texture.
Can I Use Canned Asparagus in Asparagus and Onion Casserole?
Yes, you can use canned asparagus in this easy asparagus casserole recipe.
Fresh is preferred for its vibrant flavor and crisp texture, but canned can be used in a pinch.
However, since canned has a softer texture, you will want to adjust the cooking times in this onion and asparagus casserole recipe to prevent overcooking.
Can I Make Asparagus and Onion Casserole Ahead of Time?
Yes, you can make onion asparagus casserole ahead of time!
Just refrigerate it, covered tightly with aluminum foil or plastic wrap so it doesn’t dry out.
Then bake as directed when ready to serve.
How to Store Asparagus and Onion Casserole:
Store any leftover asparagus onion casserole in an airtight container in the refrigerator for up to 3-4 days.
Reheat individual servings in the microwave or oven until heated through.
Can You Freeze Asparagus and Onion Casserole?
Yes, you can freeze this asparagus casserole.
I like to make the casserole in a freezer safe baking dish. Then just wrap the cooled casserole dish tightly in foil or plastic wrap, making sure to cover the seams multiple times.
Thaw in the refrigerator overnight before reheating.
What to Serve with Asparagus and Onion Casserole:
- Salsa Beef Slow Cooker
- Slow Cooked Brisket in Oven
- Chef Salad
- Pizza Quesadilla
- Honey Mustard Chicken
- Mambo Chicken
Is Asparagus and Onion Casserole Healthy?
Yes, this asparagus casserole recipe is healthy.
It has a balance of nutritious ingredients, including fresh vegetables, protein-rich cheese, and wholesome milk.
Enjoyed as part of a well-rounded meal, it can be a delicious and nutritious addition to your diet.
Is Asparagus and Onion Casserole Gluten Free?
No, this asparagus onion casserole is not gluten free the way it was written.
However, it is easily adapted to be gluten-free if you are feeding people with a medically restrictive diet.
Just use a gluten free flour instead of all-purpose flour to thicken the creamy sauce.
I like to use cornstarch. And be sure to use gluten free breadcrumbs.
Is Asparagus Healthy?
Yes, asparagus is a very healthy vegetable!
Asparagus is low in calories and rich in essential nutrients like vitamins A, C, and K, as well as folate and fiber.
Incorporating asparagus into your diet can support overall health and well-being.
If you’re a fan of Asparagus, give these recipes a try:
- Asparagus on the Grill
- Asparagus Vichyssoise
- Pan Fried Asparagus
- Bacon Wrapped Asparagus Recipe
- Asparagus Microgreens
- Air Fryer Asparagus
Whether you need a delicious side dish for holiday meals or just a perfect dish for a weeknight dinner, this asparagus and onion casserole is a perfect way to make every day feel like special occasions.
Asparagus and Onion Casserole
Dive into a wholesome indulgence with our Asparagus and Onion Casserole. Creamy, cheesy, and bursting with flavor, this dish is a comforting delight for any occasion.
Ingredients
Instructions
- In a skillet, sautee the asparagus and onion in 1 Tablespoon of butter until crisp tender - about 6-8 minutes.
- Transfer to an ungreased 8 inch casserole dish.
- In a saucepan, melt 2 Tablespoons butter. Stir in flour until smooth.
- Slowly add milk and little at a time. Mixture will get thick and clumpy at first but will thin out as you SLOWLY add milk.
- Bring to a boil and cook for 2 minutes or until thickened.
- Reduce the heat and add cream cheese, salt and pepper. Mix well. Keep stirring until cream cheese is melted and creamy.
- Pour mixture over vegetables.
- Sprinkle it with cheddar cheese.
- Melt remaining 2 Tablespoons of butter in your skillet and add bread crumbs. Pour over the casserole.
- Bake at 350*F for 35-40 minutes or until hot and bubby.
- Serve immediately.
Nutrition Information:
Yield:
6Serving Size:
1Amount Per Serving: Calories: 226Total Fat: 10gSaturated Fat: 5gTrans Fat: 0gUnsaturated Fat: 3gCholesterol: 27mgSodium: 621mgCarbohydrates: 26gFiber: 3gSugar: 6gProtein: 9g