This spinach casserole is the cozy, cheese dinner you need to make today if you’ve got a bag of spinach and 30 minutes. It’s packed with greens, creamy without being heavy, and works just as well for a solo lunch as it does for a family side dish. Fresh or frozen spinach both work here—this one’s all about using what you’ve already got and turning it into something craveable.
Cozy, cheesy, weeknight-ready spinach bake!
Usually when I have fresh spinach and ricotta, I turn it into a lasagna or creamed spinach. But I wanted to make something different, and here we are! I’ve made this recipe more times than I can count—especially on weeks when I’m juggling deadlines, toddler meals, and the ever-growing pile of laundry. It’s a comfort dish that feels nourishing but still has that cheesy, creamy payoff we all want at the end of a long day.
What makes this version work is the balance. Greek yogurt keeps it tangy and light, the ricotta adds creaminess without needing béchamel, and the eggs hold it all together. The optional Ritz topping gives it just the right crunch—nostalgic, golden, and borderline addictive. I’ve tested it with both fresh and frozen spinach, and honestly? Both are great if you prep them right.
If you’re into veggie-packed casseroles that don’t taste like a compromise, you’ll also love my butternut squash casserole or my green rice casserole —both freezer-friendly, family-approved, and deeply satisfying.
Key ingredients and why they matter
Spinach casserole is all about that creamy, comforting mix of spinach, ricotta, Greek yogurt, and eggs. The cheese makes it nice and gooey, the onion and garlic add flavor, a pinch of nutmeg gives it a little warmth, and those Ritz crackers on top give it a buttery crunch that just hits right.
Full ingredient list and detailed instructions in the recipe card.
- Spinach: Fresh or frozen both work. Just make sure to squeeze out as much moisture as possible—wet spinach = soggy casserole.
- Ricotta + Greek yogurt: This duo makes it creamy and tangy without heavy cream. You can swap in sour cream for the yogurt if that’s what you have.
- Eggs: They help bind everything together into a sliceable, scoopable dish.
- Shredded cheese: I like a mix of cheddar and mozzarella for that perfect melt and stretch.
- Nutmeg: Just a pinch enhances the greens without overpowering them.
- Ritz crackers: Optional, but honestly? Highly recommended. The buttery crunch takes it over the top. You can also substitute it with regular or panko breadcrumbs instead.
TIPS & TRICKS
Shruthi’s top tips
- Squeeze the spinach like your dinner depends on it because it does! Whether fresh or frozen, excess water is your enemy.
- Don’t skip sautéing the onion — it adds depth and sweetness you won’t get otherwise.
- No ricotta? Cottage cheese works in a pinch—just blend it smooth for best texture. Check out all my cottage cheese recipes if you have leftovers.
- Want more protein? Stir in ½ cup of cooked lentils or white beans before baking.
- Let it cool before slicing — it firms up as it rests and gives you cleaner slices.
How to make creamed spinach casserole
- In a skillet, heat olive oil over medium heat. Add chopped onion and cook until softened, about 3–4 minutes. Add the garlic and cook for an additional minute. Remove from heat.
- In a large bowl, whisk together ricotta, yogurt, eggs, cheese, salt, pepper, and nutmeg until smooth.
- Stir in the sautéed onion mixture and spinach until fully combined.
- Pour the spinach mixture into the prepared baking dish and smooth the top. Sprinkle crushed Ritz crackers evenly over the surface, if using.
- Bake for 25–30 minutes, or until the top is golden and the center is set. Let cool slightly, then serve warm.
How to serve spinach casserole
Spinach casserole is best enjoyed warm, straight from the oven, so it’s creamy and comforting. Let it cool for a few minutes before slicing to help it hold its shape. Serve it with toast, garlic bread, or a boiled egg for brunch, or pair it with fall kale salad or roasted veggie salad for a light, satisfying dinner.
Storage and reheating suggestions
You can make spinach casserole up to 24 hours in advance, refrigerate it, and bake it fresh. I also typically double the batch—bake one now and freeze the other unbaked for an easy weeknight save. Cover loosely with foil in the oven or microwave in 30-second bursts.
To store leftovers, keep them in an airtight container in the fridge for 3–4 days. To reheat, warm them in the oven or microwave until heated through. If you want, you can crisp up the topping in the oven for a few minutes before serving.
More casserole recipes
If you love casserole dishes, you’ll love these recipes too!
Easy, Cheesy Asparagus Casserole
Green Bean Casserole with Cream Cheese
3 Ingredient Broccoli Cheese Casserole
Spaghetti Squash Casserole
Spinach Casserole
Ingredients
- 4 cups fresh spinach, packed (or 10 oz frozen spinach, thawed and squeezed dry)
- 1 tablespoon olive oil
- 1 small onion, finely chopped
- 2 garlic cloves, minced
- 1 cup ricotta cheese
- ½ cup Greek yogurt
- 2 eggs
- 1 cup shredded cheddar, or mozzarellaor a mix
- 1 teaspoon salt
- ½ teaspoon black pepper
- ¼ teaspoon nutmeg, optional
- ½ cup Ritz crackers, crushed, about 10–12 crackers (optional, for topping)
Instructions
- Preheat the oven to 350°F. Lightly grease a medium (8×8 or 2-quart) baking dish.
- If using fresh spinach: Roughly chop and sauté with a splash of water in a skillet over medium heat until wilted, about 3–4 minutes. Transfer to a colander and squeeze out excess moisture.
- If using frozen: Make sure it’s fully thawed, then squeeze dry using a clean kitchen towel or paper towels.
- In the same skillet, heat olive oil over medium heat. Add chopped onion and cook until softened, about 3–4 minutes. Add the garlic and cook for an additional minute. Remove from heat.
- In a large bowl, whisk together ricotta, yogurt, eggs, cheese, salt, pepper, and nutmeg until smooth. Stir in the sautéed onion mixture and spinach until fully combined.
- Pour the mixture into the greased baking dish and smooth the top. Sprinkle crushed Ritz crackers evenly over the surface, if using.
- Bake for 25–30 minutes, or until the top is golden and the center is set. Let cool slightly, then serve warm.
Notes
- Instead of Greek yogurt, you can use sour cream.
- Both fresh and frozen spinach work great in this recipe. If using frozen, make sure it’s fully thawed and squeeze out all excess water to prevent a soggy casserole
- If you don’t have Ritz, you can use plain or seasoned breadcrumbs instead (about ¼ cup).
- Leftovers keep well in the fridge for up to 4 days. Reheat in the oven or microwave until warmed through.
- Assemble the casserole up to 1 day in advance and refrigerate. Let it sit at room temp while the oven preheats before baking.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
