Supreme Rice Casserole

Cook: 15 min Cuisine: American

Creamy rice casserole with savory mushroom and onion flavors, topped with buttery richness. Perfect for comforting family dinners or potlucks, adaptable to vegetarian preferences.

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Ingredients

  • 1 stick butter
  • 1 1/3 cups uncooked instant rice
  • 1 (10 3/4 oz.) can onion soup
  • 1/2 teaspoon pepper
  • 1/3 pound fresh mushrooms, sliced

Instructions

  1. Combine all ingredients in a baking dish.
  2. Cover tightly and microwave on High for 5 minutes.
  3. Stir and microwave for an additional 5 minutes at 50% power.
  4. Let stand several minutes before serving.

Tips & Substitutions

For a deeper flavor, sauté the sliced mushrooms in the butter before combining with the other ingredients. You can substitute the onion soup with cream of mushroom soup for a creamier texture or use vegetable broth for a lighter version. Adding cooked chicken or sausage can also enhance the dish, making it a hearty meal. This recipe is great for meal prep; make a double batch to enjoy later.

Serving Suggestions

This Supreme Rice Casserole is perfect as a main dish or a side. Serve it alongside a fresh green salad or steamed vegetables for a balanced meal. It pairs beautifully with Broccoli Pecan Casserole for a comforting dinner. For a complete spread, consider adding grilled chicken or fish for protein.

Storage & Reheating

Store any leftover casserole in an airtight container in the refrigerator for up to 3 days. To reheat, microwave on medium power until heated through, stirring occasionally. Alternatively, you can bake it in the oven at 350°F (175°C) until warmed, about 20-25 minutes, which helps maintain its texture.

Nutrition & Diet Analysis (per serving)

Each serving of Supreme Rice Casserole contains roughly 391 calories, with 2g protein, 7g carbohydrates, and 40g fat. It is an excellent source of vitamin C (27% of the Daily Value).

391 kcal 20% DV
Protein Fat Carbs

Macronutrients

Protein 2.2g 4% DV
Total Fat 39.8g 51% DV
Carbs 7g 3% DV
Fiber 1.5g 6% DV
Sugar 1.1g 2% DV

Electrolytes

Sodium 314.5mg 14% DV
Potassium 192mg 4% DV
Cholesterol 118.2mg 39% DV

Vitamins & Minerals

Vitamin A 9.6mcg 1% DV
Vitamin C 24.3mg 27% DV
Vitamin D 0.1mcg
Calcium 16mg 1% DV
Iron 0.5mg 3% DV
Diet fit Keto-friendly Under 400 cal
Contains Milk

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 brown rice instead of instant rice?

While you can use brown rice, it requires a longer cooking time and more liquid. Instant rice is best for this recipe for its quick preparation, but if you prefer brown rice, cook it separately according to package instructions and mix it in before microwaving.

What can I add to make this dish more nutritious?

To boost the nutrition, consider adding chopped spinach, bell peppers, or cooked lentils to the mixture. These additions not only enhance the flavor but also increase fiber content. You can also substitute the butter with olive oil for a healthier fat option.

How can I make this casserole vegetarian?

This casserole is already quite vegetarian-friendly, but ensure your onion soup is meat-free. You can add more vegetables like zucchini or kale to enhance the dish. Using vegetable broth instead of onion soup will also maintain the desired flavor without meat.

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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