This ground beef spinach casserole is a hearty, creamy, and comforting family meal that comes together with simple pantry ingredients. It combines savory beef, tender spinach, and melted cheese in one satisfying bake.
Perfect for busy weeknights, it delivers rich flavor with minimal effort. It’s also great for meal prep or feeding a crowd.
Why You’ll Love This Recipe
This casserole is rich, creamy, and deeply satisfying thanks to the combination of beef, sour cream, and melted mozzarella.
It uses simple ingredients that are easy to find and budget-friendly.
The dish comes together quickly and bakes in one pan for easy cleanup.
It reheats well, making it perfect for leftovers or meal prep.
What You’ll Need (Ingredient Highlights)
Ground beef provides a hearty and flavorful base for the casserole.
Frozen spinach adds nutrition and balances the richness of the dish.
Cream of celery soup and sour cream create a creamy, comforting texture.
Mozzarella cheese melts into a golden, gooey topping.
Onion, garlic, and oregano build depth and savory aroma.
Pro Tips Before You Start
Drain the beef well after browning to prevent excess grease in the casserole.
Make sure the spinach is fully thawed and squeezed dry to avoid watery texture.
Let the casserole rest a few minutes after baking so it sets properly.
Adjust the hot sauce carefully to control the spice level.
How to Make Ground Beef Spinach Casserole
- Preheat the oven
Preheat your oven to 350°F (175°C) so it is ready for baking. - Cook the beef mixture
Heat a large skillet over medium-high heat. Cook ground beef, onion, and garlic until browned and crumbly, about 5–7 minutes. Drain excess grease. - Build the flavor base
Add mushrooms, oregano, hot pepper sauce, salt, and pepper. Simmer for about 5 minutes to blend flavors. - Add creamy ingredients
Stir in spinach, condensed cream of celery soup, and sour cream. Cook until heated through, about 5 minutes. - Assemble the casserole
Transfer the mixture into a casserole dish and spread evenly. Top with shredded mozzarella cheese. - Bake until bubbly
Bake for 15–20 minutes until the cheese is fully melted and slightly golden.
What to Serve With
This casserole pairs well with warm garlic bread or crusty baguette.
It also works nicely with a light green salad to balance the richness.
For a fuller meal, serve it over rice or mashed potatoes.
Variations / Substitutions
You can replace ground beef with ground turkey or chicken for a lighter version.
Cream of mushroom soup can be used instead of cream of celery for a deeper flavor.
Cheddar or a cheese blend can replace mozzarella for a sharper taste.
Fresh spinach can be used instead of frozen, but it should be sautéed first.
Storage & Leftovers
Store leftovers in an airtight container in the refrigerator for up to 3–4 days.
Reheat in the oven or microwave until warmed through.
This casserole can also be frozen for up to 2 months.
FAQs
Can I make this casserole ahead of time?
Yes, you can assemble it a day in advance and bake when ready to serve.
Can I use fresh spinach instead of frozen?
Yes, but make sure to cook and drain it well to remove excess moisture.
Is this recipe freezer-friendly?
Yes, it freezes well before or after baking.
How do I prevent a watery casserole?
Make sure the spinach is fully drained and the beef is well cooked and drained.
Can I make it less rich?
You can reduce sour cream or use a lighter version of cream soup.
Final Thoughts
This ground beef spinach casserole is a comforting, no-fuss dinner that brings together creamy, cheesy, and savory flavors in every bite.
It’s simple enough for weeknights but satisfying enough to become a regular family favorite.
Full Recipe Card
Ingredients
1 pound ground beef
1 medium onion, chopped
1 clove garlic, minced
1 (10 ounce) can sliced mushrooms, drained
1 teaspoon dried oregano
2 dashes hot pepper sauce
Salt and black pepper to taste
2 (10 ounce) packages frozen chopped spinach, thawed and drained
1 (10.5 ounce) can condensed cream of celery soup
1 cup sour cream
1 (8 ounce) package shredded mozzarella cheese
Instructions
Preheat oven to 350°F (175°C).
Cook beef, onion, and garlic in a skillet until browned, then drain fat.
Add mushrooms, oregano, hot sauce, salt, and pepper. Simmer for 5 minutes.
Stir in spinach, soup, and sour cream. Heat through.
Transfer to baking dish and top with mozzarella.
Bake 15–20 minutes until cheese is melted and bubbly.
