Betsy'S Microwave Broccoli-Cauliflower Casserole

Prep: 10 min Cook: 15 min Serves: 8 Cuisine: American

A quick and cheesy microwave casserole combining tender broccoli and cauliflower with a savory mushroom sauce, topped with bread crumbs and melted cheese. Perfect for busy weeknights or a comforting side dish, it offers a creamy texture and flavorful bite that appeals to all ages.

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Ingredients

  • 2 (10 oz.) boxes frozen chopped broccoli
  • 1 (10 oz.) box frozen cauliflower pieces
  • 1 can mushroom soup
  • 2 eggs
  • 1 small to medium onion
  • 1 tsp. Worcestershire sauce
  • 1 cup grated Cheddar cheese
  • 1/4 cup butter or margarine
  • 1/2 cup bread crumbs

Instructions

  1. Cook and drain the frozen chopped broccoli and cauliflower, then place them into a 2-quart casserole dish.
  2. Mix together the mushroom soup, eggs, minced onion, Worcestershire sauce, and grated cheddar cheese, then stir this mixture into the vegetables.
  3. Combine the melted butter with the bread crumbs, then spread this over the top of the casserole.
  4. Bake in the microwave at medium-high power for about 15 minutes or until thoroughly heated.

Tips & Substitutions

For a creamier texture, consider adding a splash of milk or cream to the mushroom soup mixture. If you want to make this dish lighter, you can use low-fat cheese and a reduced-fat mushroom soup. Fresh vegetables can be substituted for frozen; just be sure to adjust the cooking time accordingly. This casserole is a great way to use up leftover broccoli or cauliflower.

Serving Suggestions

This casserole pairs beautifully with a crisp green salad or garlic bread for a complete meal. For a heartier option, serve alongside roasted chicken or grilled fish. It also makes a delightful side dish for holiday gatherings or family dinners. Consider adding a sprinkle of fresh herbs or a dash of hot sauce for added flavor.

Storage & Reheating

Store any leftovers in an airtight container in the refrigerator for up to 3 days. To reheat, place individual portions in the microwave for 1-2 minutes or until warm. If reheating the entire casserole, cover it with a microwave-safe lid and heat in intervals to ensure even warming without drying it out.

Nutrition & Diet Analysis (per serving)

Each serving of Betsy'S Microwave Broccoli-Cauliflower Casserole contains roughly 745 calories, with 25g protein, 89g carbohydrates, and 32g fat. It is an excellent source of protein (49% of the Daily Value), calcium (45% of the Daily Value), and iron (27% of the Daily Value), and a good source of vitamin C and dietary fiber. Note that it is relatively high in sodium, at 1210mg per serving (53% of the Daily Value).

745 kcal 37% DV
Protein Fat Carbs

Macronutrients

Protein 24.7g 49% DV
Total Fat 32.3g 41% DV
Carbs 89.3g 32% DV
Fiber 4.2g 15% DV
Sugar 6.6g 13% DV

Electrolytes

Sodium 1209.5mg 53% DV
Potassium 495.8mg 11% DV
Cholesterol 163.8mg 55% DV

Vitamins & Minerals

Vitamin A 192mcg 21% DV
Vitamin C 15mg 17% DV
Vitamin D 0.3mcg 2% DV
Calcium 583.1mg 45% DV
Iron 4.9mg 27% DV
Diet fit High-protein
Contains Milk Egg Wheat/Gluten

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 broccoli and cauliflower in this recipe. Just be sure to blanch them briefly in boiling water to soften slightly before combining them with the other ingredients. Adjust the cooking time in the microwave as fresh vegetables may cook faster.

Is there a vegetarian option for this casserole?

This recipe is already vegetarian-friendly, as it does not include meat. To ensure it's completely vegetarian, check that the mushroom soup is made without any meat-based broth. You can also enhance the flavor by adding more vegetables or using vegetable broth in place of any liquid.

Can I make this casserole ahead of time?

Absolutely! You can prepare the casserole up to the baking step, cover it tightly, and refrigerate it for up to 24 hours. When you're ready to bake, simply increase the microwave cooking time by a few minutes to ensure it's heated through.

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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