Gluten Free Asparagus-Tuna Casserole


This tuna casserole recipe uses gluten-free pasta, flour, and bread crumbs, so it's safe to eat for anyone going gluten-free. Plus, this gluten-free casserole is ready to serve in just over an hour!

Creamy Tuna-Noodle Toss
Photo: Blaine Moats
Prep Time:
40 mins
Bake Time:
25 mins
Total Time:
1 hrs 5 mins


  • 1 cup dried gluten-free penne pasta

  • 1 pound tiny new potatoes, cut into 1/2-inch pieces

  • 3 tablespoon butter

  • ¼ cup chopped onion

  • 2 tablespoon gluten-free all-purpose flour

  • teaspoon salt

  • teaspoon ground black pepper

  • 2 ¼ cup milk

  • 2 teaspoon finely shredded lemon peel

  • 4 ounce provolone cheese, shredded (1 cup)

  • 1 ½ pound fresh green, white, and/or purple asparagus spears, trimmed and cut into 1-inch pieces

  • 3 4.5 ounce cans tuna packed in roasted garlic olive oil, undrained*

  • ½ cup pitted kalamata olives, halved

  • ¼ cup gluten-free soft bread crumbs

  • 1 ounce Parmesan cheese, finely shredded (1/4 cup)


  1. Preheat oven to 375°F. In a large saucepan cook pasta according to package directions, adding potatoes for the last 4 minutes of cooking; drain.

  2. Meanwhile, in a large Dutch oven heat 2 tablespoons of the butter over medium heat. Add onion; cook about 3 minutes or until tender, stirring occasionally. Stir in flour, salt, and pepper; cook and stir for 2 minutes. Gradually stir in milk; add lemon peel. Cook and stir until thickened and bubbly. Gradually add provolone, stirring until melted. Gently fold in cooked pasta mixture, asparagus, tuna, and olives. Transfer mixture to a 3-quart baking dish.

  3. For topping, in a small bowl heat the remaining butter over medium heat until melted. Stir in bread crumbs and Parmesan cheese. Sprinkle on top of tuna mixture. Bake for 25 to 30 minutes or until tuna mixture is heated through and topping is golden.


If tuna packed in garlic olive oil is not available, substitute tuna packed in oil and add 2 cloves of garlic, minced, when cooking the onion.

Nutrition Facts (per serving)

518 Calories
28g Fat
38g Carbs
28g Protein
Nutrition Facts
Servings Per Recipe 6
Calories 518
% Daily Value *
Total Fat 28g 36%
Saturated Fat 11g 55%
Cholesterol 65mg 22%
Sodium 728mg 32%
Total Carbohydrate 38g 14%
Total Sugars 7g
Protein 28g
Vitamin C 11.3mg 57%
Calcium 347mg 27%
Iron 2.7mg 15%
Potassium 806mg 17%
Folate, total 48.8mcg
Vitamin B-12 2.9mcg
Vitamin B-6 0.4mg

*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

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