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+ servings
a white plate with a square of spinach and cheese casserole
Print Recipe
5 from 2 votes

Cheesy Spinach Mushroom Casserole

Cheesy, gooey, with lots of umame, this casserole is sure to please! Eat it for lunch, dinner (or my favorite...breakfast). This is one veggie that your kids will certainly want to eat.
Prep Time15 minutes
Cook Time45 minutes
Total Time1 hour
Course: Side Dish
Cuisine: American
Diet: Gluten Free
Keyword: cheesy spinach and mushroom casserole, cheesy spinach casserole, spinach, spinach and mushroom casserole, spinach casserole
Servings: 8 people
Calories: 946kcal
Author: Gwen Wolken

Ingredients

  • 2 oz frozen spinach 10 oz bag
  • 1 whole onion chopped
  • 5 oz mushrooms chopped
  • 2 tablespoon butter
  • 2 whole eggs
  • 2 cups shredded cheese of choice
  • 1 t salt
  • ½ t pepper
  • 2 t garlic powder

Instructions

  • Preheat the oven to 375 degrees. Grease a 9x13 casserole dish and set aside. Saute the onions in the butter until soft over medium heat. Add the mushrooms and saute until the mushrooms are just starting to brown. Turn off the heat and set aside. Cook the spinach and then drain the water out by squeezing the spinach. Place the spinach into a bowl. Add the onions and mushrooms to the bowl. Add the rest of the ingredients and combine. Pour the mixture into the greased casserole dish. Bake for 45 minutes to an hour. The top should look lightly brown and the cheese melted.

Notes

Choose the cheese of your choice. I used cheddar in the pictures but I also love feta or a combination of mozzarella and parmesan. You can take out the mushrooms, add another veggie, or add a protein. This casserole is very versatile. I also used cut spinach in these pictures and not chopped. Feel free to use chopped spinach. It works even better than cut spinach.

Nutrition

Calories: 946kcal | Carbohydrates: 17g | Protein: 58g | Fat: 74g | Saturated Fat: 44g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 21g | Trans Fat: 1g | Cholesterol: 245mg | Sodium: 3966mg | Potassium: 913mg | Fiber: 4g | Sugar: 6g | Vitamin A: 8879IU | Vitamin C: 6mg | Calcium: 1227mg | Iron: 3mg