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A serving of broccoli and cheese casserole topped with a golden-brown tuna biscuit on a white plate. A blue dish with more casserole is in the background, reminiscent of a classic tuna biscuit casserole feast.
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Easy Tuna Biscuit Casserole without Cream Soups

Rich, creamy tuna casserole topped with tender, flaky biscuits on top. Full of flavor, veggies, and protein.
Course Main Course
Cuisine American
Keyword biscuits, broccoli, canned tuna, spinach, tuna biscuit casserole, tuna casserole
Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings 9
Calories 347kcal
Author Christina

Ingredients

  • 2 tablespoons butter
  • 1/2 onion chopped
  • 2 tablespoons flour
  • 2 cups whole milk
  • 2 cans tuna (5 oz.) drained
  • 1 cup broccoli chopped
  • 3 cups fresh spinach chopped
  • 1 clove garlic
  • 1 teaspoon dried thyme
  • Salt and pepper to taste
  • 2 cup shredded cheddar cheese plus a few tablespoons for the top
  • 9 frozen or homemade biscuits
  • 1 tablespoon butter melted (optional, for brushing biscuits)

Instructions

  • Preheat your oven to 375°F (190°C). Grease a 9×9-inch baking dish with nonstick spray or butter.
  • In a skillet, melt butter and saute onions until translucent.
  • Add flour and cook and stir until flour just starts to brown.
  • Add milk, all at once. Cook and stir until thick and bubbly.
  • Add drained tuna, broccoli and spinach, most of the cheese, garlic, thyme, salt, and pepper. Stir until well combined.
  • Pour the tuna mixture into the prepared baking dish and spread it evenly.
  • Place the biscuits on top of the tuna mixture, spacing them evenly. If desired, brush the tops of the biscuits with melted butter for extra flavor and a golden-brown finish.
  • Bake in the preheated oven for 20-25 minutes, or until the biscuits are golden brown and cooked through.
  • Sprinkle the remaining shredded cheddar cheese over the biscuits and return to the oven for an additional 3-5 minutes, or until the cheese is melted and bubbly.
  • Let the casserole cool for a few minutes before serving. Enjoy this creamy, cheesy, and comforting tuna biscuit casserole with a side salad or steamed vegetables.

Nutrition

Calories: 347kcal | Carbohydrates: 16g | Protein: 21g | Fat: 22g | Saturated Fat: 11g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 6g | Trans Fat: 0.2g | Cholesterol: 69mg | Sodium: 671mg | Potassium: 259mg | Fiber: 1g | Sugar: 2g | Vitamin A: 1561IU | Vitamin C: 12mg | Calcium: 342mg | Iron: 2mg