Tuna Bean Casserole

Prep: 10 min Cook: 30 min Serves: 4 Cuisine: American

A creamy tuna bean casserole with a flavorful mustard and parsley sauce, topped with crispy onion rings. Perfect for comforting family dinners or casual gatherings.

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Ingredients

  • 4 Tbsp. oleo
  • 4 Tbsp. flour
  • 2 tsp. salt
  • 1/2 tsp. pepper
  • 2 1/2 cups milk
  • 2 (7 oz.) cans tuna
  • 2 cans green beans
  • 2 Tbsp. parsley flakes
  • 2 Tbsp. mustard
  • 2 tsp. horseradish
  • 2 cans onion rings

Instructions

  1. Melt butter in a skillet.
  2. Add flour, salt, and pepper; blend well.
  3. Gradually add milk while stirring.
  4. Cook and stir over medium heat until thickened.
  5. Add drained tuna, green beans, parsley flakes, mustard, and horseradish; mix well.
  6. Spoon into a greased 2-quart casserole dish.
  7. Bake at 350°F for 30 minutes.
  8. Add onion rings on top during the last 5 minutes of baking, if desired.

Tips & Substitutions

For a creamier texture, consider adding a splash of sour cream or cream cheese to the mixture. If you prefer a healthier option, substitute low-fat milk for the whole milk. Fresh or frozen green beans can be used instead of canned for added freshness. You can also experiment by incorporating different seasonings or vegetables to suit your taste, similar to the variety found in American recipes.

Serving Suggestions

This Tuna Bean Casserole pairs beautifully with a crisp green salad or some buttered Corn-On-The-Cob for a complete meal. You can also serve it alongside garlic bread for a comforting dinner. For a fun twist, top each serving with additional parsley or your favorite cheese for added flavor.

Storage & Reheating

Store leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, place the casserole in the oven at 350°F until heated through, about 20-25 minutes. For quicker reheating, you can use the microwave, heating in short intervals until warm, but be cautious not to overcook.

Nutrition & Diet Analysis (per serving)

Each serving of Tuna Bean Casserole contains roughly 954 calories, with 20g protein, 150g carbohydrates, and 31g fat. It is an excellent source of iron (43% of the Daily Value), protein (40% of the Daily Value), and dietary fiber (28% of the Daily Value). Note that it is relatively high in sodium, at 2529mg per serving (110% of the Daily Value).

954 kcal 48% DV
Protein Fat Carbs

Macronutrients

Protein 19.9g 40% DV
Total Fat 30.5g 39% DV
Carbs 150.2g 55% DV
Fiber 7.9g 28% DV
Sugar 14.5g 29% DV

Electrolytes

Sodium 2529mg 100% DV
Potassium 430.4mg 9% DV
Cholesterol 1.4mg

Vitamins & Minerals

Vitamin A 74mcg 8% DV
Vitamin C 17.8mg 20% DV
Vitamin D 0.2mcg 1% DV
Calcium 116.1mg 9% DV
Iron 7.8mg 43% DV
Diet fit High-fiber Low-fat
Contains Milk Wheat/Gluten Fish

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I use fresh tuna instead of canned?

Yes, you can absolutely use fresh tuna! Just cook it thoroughly before adding it to the casserole. This will add a fresher flavor and a firmer texture to the dish, making it a bit different from the traditional canned version.

Can I make this casserole in advance?

Yes, you can prepare the casserole a day ahead. Assemble it as directed, then cover and refrigerate until you're ready to bake. Just remember to let it sit at room temperature for about 30 minutes before baking to ensure even cooking.

What can I substitute for the onion rings?

If you prefer not to use onion rings, you can top your casserole with crushed crackers, potato chips, or even grated cheese for a different crunch. Each alternative will give your casserole a unique flavor and texture while still keeping it delicious.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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