How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Spinach Mushroom Cheese Casserole?

You need 11 ingredients. The key ingredients include: 16 ounces frozen spinach, thawed and squeezed dry, 1 (16 ounce) can mushroom stems and pieces, drained, 1/2 cup finely chopped onion, 1 garlic clove, minced, and more.

Is Spinach Mushroom Cheese Casserole suitable as vegetarian?

Yes, Spinach Mushroom Cheese Casserole falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Spinach Mushroom Cheese Casserole?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Spinach Mushroom Cheese Casserole Recipe

Name: Spinach Mushroom Cheese Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 16 ounces frozen spinach, thawed and squeezed dry; 1 (16 ounce) can mushroom stems and pieces, drained; 1/2 cup finely chopped onion; 1 garlic clove, minced; 4 ounces light cream cheese, softened; 2 tablespoons butter, melted; 2 eggs, lightly beaten; 3 tablespoons skim milk; 1 1/2 - 2 cups shredded cheddar cheese; salt, to taste; pepper, to taste

Try this homemade Spinach Mushroom Cheese Casserole recipe the whole family will love. Made with frozen spinach, mushroom stems, onion and garlic. Easy …

This Spinach Mushroom Cheese Casserole relies on simple, everyday ingredients such as finely chopped onion, garlic clove, minced, light cream cheese, softened and butter, melted. It comes together quickly and makes 4 servings, at about 454 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 Vegetarian

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

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Spinach Mushroom Cheese Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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