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Asparagus Casserole with French Fried Onions
5 from 6 votes

Asparagus Casserole with French Fried Onions

Asparagus Casserole is an easy holiday dish that is creamy inside with crunchy French onion fries toppings. Just the perfect side dish to go on your dinner table for Thanksgiving or Easter!

Prep Time
1 hr
Cook Time
30 mins
Total Time
1 hr 30 mins
Servings: 8 servings
Calories: 516 kcal
Course: Side Dish, Main Course
Cuisine: American

Ingredients

Homemade French Fried Onions (or use store-bought):
  • 3 onion sliced into thin rings, large
  • 1 1/2 cups milk
  • 1 1/2 cups all-purpose flour
  • 1 teaspoon garlic powder
  • 1/4 teaspoon salt
  • 1/4 teaspoon black pepper ground
  • vegetable oil or canola oil, for frying
Asparagus Casserole:
  • 4 tablespoons butter unsalted
  • 2 pounds asparagus trimmed and cut into 1-inch pieces, fresh
  • 8 ounce package white mushrooms sliced
  • 1 onion thinly sliced, small
  • 1/4 cup all-purpose flour
  • 1 1/2 cups light cream
  • 1/2 cup mayonnaise
  • 1/2 cup cream cheese softened to room temperature
  • 1/2 cup cheddar cheese shredded
  • 1/2 cup swiss cheese shredded
  • 1/2 teaspoon thyme
  • 1 teaspoon lemon zest
  • 1/4 teaspoon paprika
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper

Instructions

Homemade French Fried Onions (or use store-bought):
    Cup of Yum
  1. Slice the onions into thin rings and separate them into individual rings, add them to a large bowl.
  2. Add milk to the onion rings and let soak for 20 minutes.
  3. In a medium bowl combine flour, salt, garlic powder, and ground black pepper. Whisk to combine.
  4. When ready to cook, add oil to a large, deep skillet over high heat (or deep fryer).
  5. Once the oil is hot, working in batches, add a handful of onion rings to the flour mixture, cover well and shake any excess. Transfer to the hot oil and fry until golden brown, turning often.
  6. Remove the French fried onions and place them on a baking sheet that has been covered with paper towels to drain excess oil.
  7. Repeat with the remaining onion rings.
Asparagus Casserole:
  1. First, grease a 9x13 inch casserole dish and preheat the oven to 350 degrees.
  2. Place a large non-stick pan over medium heat and add butter and melt, add onion slices and cook for 1-2 minutes, until just tender.
  3. Add minced garlic, asparagus, mushrooms, and cook, stirring occasionally, for about 6-8 minutes.
  4. Season with salt, pepper, paprika, thyme, and lemon zest. Stir to combine.
  5. In a measuring cup combine cream and flour, whisk to combine.
  6. Add the flour mixture to the skillet and cook, stirring for 3-4 minutes, or until thickened.
  7. Reduce heat to low and mix in mayonnaise and cream cheese, stir until fully combined.
  8. Remove from heat and stir in both kinds of cheese until melted.
  9. Crush about 1 1/2 cups of french-fried onions and mix them into the asparagus mixture.
  10. Transfer mixture to a prepared casserole dish.
  11. Sprinkle remaining french-fried onions on top.
  12. Place in oven and bake for 30-40 minutes or until mixture is bubbly.
  13. Top with more french-fried onions and serve.

Nutrition Information

Calories 516kcal (26%) Carbohydrates 35g (12%) Protein 13g (26%) Fat 37g (57%) Saturated Fat 17g (85%) Cholesterol 91mg (30%) Sodium 525mg (22%) Potassium 620mg (13%) Fiber 5g (20%) Sugar 8g (16%) Vitamin A 1805IU (36%) Vitamin C 11.8mg (13%) Calcium 263mg (26%) Iron 4.6mg (26%)

Nutrition Facts

Serving: 8 servings

Amount Per Serving

Calories 516

% Daily Value*

Calories 516kcal 26%
Carbohydrates 35g 12%
Protein 13g 26%
Fat 37g 57%
Saturated Fat 17g 85%
Cholesterol 91mg 30%
Sodium 525mg 22%
Potassium 620mg 13%
Fiber 5g 20%
Sugar 8g 16%
Vitamin A 1805IU 36%
Vitamin C 11.8mg 13%
Calcium 263mg 26%
Iron 4.6mg 26%

* Percent Daily Values are based on a 2,000 calorie diet.