One Dish Cooking Vegetable Casserole

Prep: 10 min Cook: 35 min Serves: 6 Cuisine: American

A creamy vegetable casserole with melted Swiss cheese, crispy onion rings, and savory pimento, perfect for comforting family dinners or potlucks with vibrant flavors.

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Ingredients

  • 16 oz. frozen broccoli, carrots and cauliflower
  • 10 3/4 oz. condensed cream of mushroom soup
  • 4 oz. shredded Swiss cheese
  • 1/3 cup sour cream
  • 1/4 teaspoon pepper
  • 4 oz. jar pimento, chopped and drained
  • 2.8 oz. can French fried onion rings

Instructions

  1. Preheat oven to 350°F (175°C).
  2. Combine thawed and drained vegetables, condensed cream of mushroom soup, half of the shredded Swiss cheese, sour cream, pepper, chopped pimento, and half of the French fried onion rings in a bowl.
  3. Pour the mixture into a 1-quart casserole dish.
  4. Bake, covered, for 30 minutes.
  5. Remove from oven and top with remaining cheese and onion rings.
  6. Bake, uncovered, for an additional 5 minutes or until cheese is melted and bubbly.

Tips & Substitutions

For a creamier texture, consider using Greek yogurt instead of sour cream. You can easily swap out the Swiss cheese for cheddar or mozzarella if preferred. To save time, you can use fresh vegetables, just blanch them briefly before mixing. If you want a bit of spice, add some crushed red pepper flakes to the mix.

Serving Suggestions

This casserole pairs beautifully with a fresh green salad or crusty bread for a complete meal. For a heartier option, serve alongside grilled chicken or fish. It also makes a great side dish for family gatherings or potlucks, and you can browse more American recipes for additional inspiration.

Storage & Reheating

Store any leftover casserole in an airtight container in the refrigerator for up to 3 days. To reheat, simply place in the oven at 350°F (175°C) for about 15-20 minutes, or until heated through. Alternatively, you can microwave individual portions, covered, for 2-3 minutes.

Nutrition & Diet Analysis (per serving)

Each serving of One Dish Cooking Vegetable Casserole contains roughly 169 calories, with 8g protein, 19g carbohydrates, and 7g fat. It is an excellent source of vitamin C (49% of the Daily Value), and a good source of calcium and protein. Note that it is relatively high in sodium, at 499mg per serving (22% of the Daily Value).

169 kcal 8% DV
Protein Fat Carbs

Macronutrients

Protein 8.2g 16% DV
Total Fat 7.3g 9% DV
Carbs 18.6g 7% DV
Fiber 1.4g 5% DV
Sugar 1.6g 3% DV

Electrolytes

Sodium 499.4mg 22% DV
Potassium 261.3mg 6% DV
Cholesterol 23.3mg 8% DV

Vitamins & Minerals

Vitamin A 142.1mcg 16% DV
Vitamin C 43.8mg 49% DV
Calcium 232.7mg 18% DV
Iron 1mg 6% DV
Diet fit Low-carb 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 fresh vegetables instead of frozen?

Yes, you can use fresh vegetables! Just make sure to blanch them briefly in boiling water before adding them to the casserole to ensure they cook evenly. Fresh broccoli, carrots, and cauliflower work wonderfully.

Can I make this casserole ahead of time?

Absolutely! You can prepare the casserole up to the baking step, cover it, and refrigerate it for a day. When ready to serve, simply bake it as directed, adding a few extra minutes if it’s coming directly from the fridge.

Is there a way to make this recipe vegan?

To make this casserole vegan, substitute the cream of mushroom soup with a plant-based version, use dairy-free cheese, and replace sour cream with a vegan alternative like cashew cream or coconut yogurt. This will still keep the flavors vibrant and 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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