Easy Asparagus Casserole (No Canned Soup)

Move over green bean casserole! This Asparagus Casserole recipe is a fantastic veggie side dish for Easter celebrations, brunches, or weeknight spring and summer dinners. Crisp-tender asparagus combines with sautéed onions in a rich cheese sauce. Topped with cracker crumbs and baked until golden, this is one veggie dish everyone will look forward to eating.

Ingredients To Make Asparagus Casserole Recipe

Here are the simple ingredients you need to make this creamy asparagus casserole:

• Fresh asparagus – you’ll need 1 pound of asparagus spears cut into 1 1/2 – 2 inch pieces
• Unsalted butter – you only need 2 tablespoons butter
• Yellow onion – may sub white onion
• All-purpose flour – you can also use a gluten-free flour to make this recipe gluten-free. We like Bob’s Red Mill 1-to-1 Gluten-Free Baking Flour or King Arthur Measure-for-Measure Gluten-Free Flour
• Spices – salt, black pepper, garlic, and nutmeg
• Sour cream – may sub plain, whole milk yogurt
• Swiss cheese – feel free to use any cheese you like best such as cheddar cheese or parmesan cheese
• Crushed crackers – use gluten free, if needed. May sub French fried onions or ⅓ cup panko breadcrumbs

Find the ingredient list with exact measurements in the recipe card below.

Ingredient Highlight: Asparagus

We love to take advantage of asparagus when it comes into season with a variety of our best asparagus recipes. Not only is it vibrant and versatile, but asparagus is also full of health benefits. For instance, asparagus is:

• An excellent source of vitamin A, vitamin C, and vitamin K
• Rich in potassium and phosphorous
• A good source of fiber

How to Pick Asparagus

When shopping at your local grocery store, there are a few things to look for when it comes to choosing the best asparagus.

• Look for stalks that are firm to the touch and straight with a fairly smooth texture.
• Choose bunches that are dark green in color and softly fade into white at the bottom.
• Make sure the tips of the stalks are dry and not mushy.

How to Trim Asparagus

There are two methods you can use to trim asparagus.

1. Use a large chef’s knife to trim an inch or two off the bottom of the spears, removing the woody part.
2. Grab both ends of a spear, and bend until the asparagus snaps.

How to Make Cheesy Asparagus Casserole

Here are the steps to make this asparagus casserole recipe today:

1. Preheat the oven, and grease a 9-inch round or square shallow baking dish with cooking spray. Arrange the asparagus in an even layer at the bottom of the dish.
2. Melt the butter in a medium skillet over medium-high heat. Once hot, add the onion, and sauté until soft and translucent.
3. Stir the flour and seasonings in with the melted butter and onions. Then, cook for an additional minute or until the flour is mixed in.
4. Add the sour cream and part of the cheese to the skillet, stirring continuously on low heat until the cheese melts.
5. Top the asparagus evenly with the cheese sauce mixture. Then, sprinkle the crushed crackers and remaining cheese evenly on top.
6. Bake until the casserole is bubbly and the top is golden brown and crispy.

For serving size and the complete directions and ingredient amounts, scroll down to the recipe card below. All of our recipes include the nutrition information, listing calories (kcals), protein, carbohydrates/carb, fiber, sugar, saturated fat, sodium, cholesterol, and more per serving.

Recipe Tips from Dietitian Stacie

Dietitian Stacie developed this recipe and has these tips to share:

• While any crushed cracker such as Ritz crackers will work for the topping we like to use Simple Mills Almond Flour Crackers. They are perfect for this recipe, are gluten free, and made with only real food ingredients. 
• To add a boost of protein to this recipe, I like to use plain yogurt in place of the sour cream. Both options have been tested and work great.

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Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 3 reviews

Easy Asparagus Casserole (No Canned Soup)

This cheesy veggie side dish is a delicious way to serve asparagus. It would make a great addition to an Easter spread or any meal when asparagus is in season. 

Prep: 10 minsCook: 20-25 minsTotal: 35 mins

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Servings: 6 servings (4 cups) 1x

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Ingredients

• 1 lb. asparagus, cut in 1 ½-2  inch pieces (about 3 – 3 ½ cups asparagus)
• 2 tablespoons butter (salted or unsalted)
• ½ medium yellow onion, thinly sliced (about 1–1 ½ cups)
• 1 tablespoon all purpose flour (substitute gluten-free flour* if needed)
• ½ teaspoon fine salt
• ¼ teaspoon black pepper
• ¼ teaspoon garlic powder
• Pinch of nutmeg (optional)
• 1 cup sour cream or plain yogurt (not Greek) 
• 1 ¼ cups shredded Swiss cheese, divided
• ⅓ cup crushed crackers (use gluten-free**, if needed; may sub French fried onions)

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Instructions

1. Preheat the oven to 400℉ degrees.
2. Place asparagus in a greased 9-inch shallow round or square baking dish. 
3. In a medium skillet over medium-high heat, add butter. Once melted and hot, add the onion and saute for 3-4 minutes or until soft and translucent.
4. Stir in flour, salt, pepper, garlic powder, and nutmeg. Cook for an additional minute or until flour is mixed in. 
5. Add sour cream and 1 cup of swiss cheese to the skillet, stirring continuously on low heat until the cheese melts.
6. Top the asparagus evenly with the cheese sauce mixture.
7. Sprinkle with crushed crackers and the remaining ¼ cup of cheese.
8. Bake at 400 degrees for 15-20 min or until bubbly and the top is golden brown and crispy.

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Notes

*We recommend Bob’s Red Mill Gluten-Free 1:1 Baking Flour or King Arthur Gluten-Free Measure for Measure Flour

**We love these gluten-free almond flour crackers 

Nutrition Information

• Serving Size: 1/6 of the recipe
• Calories: 270
• Fat: 20 g
• (Sat Fat: 12 g)
• Sodium: 322 mg
• Carbohydrate: 13 g
• (Fiber: 2 g
• Sugar: 4 g)
• Protein: 10 g
• Cholesterol: 59 mg

Dietary

Egg-FreeNut-freeVegetarian

© The Real Food Dietitians

Recipe By: Stacie Hassing

More asparagus recipes to try

Creamy Lemon Asparagus Risotto (Easy Side Dish)

Sautéed Asparagus Recipe With Optional Goat Cheese & Almonds

Crustless Asparagus, Leek & Feta Quiche

Sheet Pan Honey Glazed Salmon with Asparagus (30 Minute Meal)

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