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 Casserole?

You need 11 ingredients. The key ingredients include: 2 (10 oz.) pkg. frozen, chopped spinach, 1/2 c. butter or margarine, 3/4 c. bread crumbs, 1/4 c. grated onion, and more.

Is Spinach Casserole suitable as vegetarian?

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

How do I store leftover Spinach Casserole?

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

Spinach Casserole Recipe

Name: Spinach Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 (10 oz.) pkg. frozen, chopped spinach; 1/2 c. butter or margarine; 3/4 c. bread crumbs; 1/4 c. grated onion; 2 eggs, beaten; 1/4 c. Parmesan cheese; 1/2 c. chopped mushrooms, preboiled; 1/8 tsp. thyme; 1 tsp. garlic powder; 3 dashes Tabasco sauce; 1/2 tsp. pepper

Try this homemade Spinach Casserole recipe the whole family will love. Made with frozen, butter, bread crumbs and onion. Easy step-by-step instructions …

This Spinach Casserole relies on simple, everyday ingredients such as butter or margarine, bread crumbs, grated onion and eggs, beaten. It comes together quickly and makes 4 servings, at about 378 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.

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

My Personal Notes

Saved locally in your browser — visible only to you.

Spinach Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions