Spinach Casserole: A Delicious And Nutritious Side Dish Recipe

I cracked the code on a Spinach Cheese Casserole that lets you use fresh or frozen spinach for a silky cheese filling finished with a crunchy topping.

I never believed a spinach side could steal the show until I made this. Bright fresh spinach and sharp cheddar combine into gooey, salty bites that surprise people every time.

I like that it sneaks veggies onto the plate but still feels indulgent, not preachy. If you keep a running list of Spinach Cheese Casserole ideas this one will make the cut.

There’s a flavor twist in the middle and a little crunch on top and honestly you might want to hide the leftovers, cuz they disappear fast. Tell me which part you stole first.

Ingredients

• Spinach packs fiber, iron and vitamins, keeps the dish light and slightly earthy.
• Cream cheese is rich and creamy, adds fat and smooth mouthfeel to bake.
• Sour cream or Greek yogurt adds tang, yogurt gives more protein and less fat.
• Eggs help bind everything together, add protein and a silky, custardy texture.
• Sharp cheddar brings bold cheesy flavor, extra protein and a great melty top.
• Breadcrumbs or crushed crackers give crunchy topping, soak butter and stay crisp.
• Olive oil and butter give richness, help browning and carry the other flavors.
• Onion and garlic add savory depth and a mild sweet note when cooked.
• Parmesan adds salty, nutty kick, a little goes a long way flavorwise.

Ingredient Quantities

• 1 lb fresh spinach or 10 oz frozen spinach, thawed and squeezed dry
• 1 medium onion, finely chopped
• 2 cloves garlic, minced
• 8 oz cream cheese, softened
• 1 cup sour cream or plain Greek yogurt
• 2 large eggs, lightly beaten
• 1 1/2 cups shredded sharp cheddar cheese, divided
• 1/2 cup grated Parmesan cheese
• 1/4 cup milk
• 1/2 tsp salt
• 1/4 tsp black pepper
• 1/4 tsp ground nutmeg optional
• 1 cup plain breadcrumbs or crushed crackers
• 3 tbsp butter, melted
• 2 tbsp olive oil

How to Make this

1. Preheat oven to 350°F (175°C) and grease an 8×8 or 9×9 inch baking dish with a little butter or oil.

2. If using fresh spinach, rough chop it. Heat 2 tbsp olive oil in a large skillet over medium, add 1 finely chopped onion and cook until soft about 5 minutes, add 2 minced garlic cloves and cook 30 seconds. Add spinach in batches and cook until wilted. If using frozen, thaw completely, squeeze dry and briefly heat with the onion and garlic to remove extra moisture. Transfer spinach mixture to a bowl and squeeze out as much liquid as you can with your hands or a clean towel.

3. In a mixing bowl beat 8 oz softened cream cheese with 1 cup sour cream or plain Greek yogurt until smooth, then stir in 2 lightly beaten eggs and 1/4 cup milk to loosen the mixture.

4. Stir in 1 cup shredded sharp cheddar (reserve about 1/2 cup for topping), 1/2 cup grated Parmesan, 1/2 tsp salt, 1/4 tsp black pepper and 1/4 tsp ground nutmeg if using. Mix until well combined.

5. Fold the squeezed spinach and cooked onion/garlic into the cheese mixture, make sure it’s evenly distributed and taste for salt, adjust if needed.

6. Spoon the mixture into the prepared dish and smooth the top with a spatula.

7. Make the topping by mixing 1 cup plain breadcrumbs or crushed crackers with 3 tbsp melted butter; sprinkle this evenly over the casserole then top with the reserved 1/2 cup cheddar (and a little extra Parmesan if you like).

8. Bake for 25 to 30 minutes until the center is set and the top is golden and crispy. If the topping browns too quick, cover loosely with foil for the last 10 minutes.

9. Let the casserole rest about 8 to 10 minutes before serving so it slices cleanly. Tip: Don’t skimp on squeezing the spinach, watery spinach = soggy casserole; for a smoother texture pulse the cooked spinach a few times in a food processor, and if you want extra crunch broil 1 to 2 minutes at the end but watch it close.

Equipment Needed

1. 8×8 or 9×9 inch baking dish, greased with butter or oil
2. Large skillet for wilting the spinach and cooking the onion
3. Mixing bowls — one large for the cheese mix and one medium for the spinach (ok to use more)
4. Cutting board and a sharp chef knife for chopping onion and spinach
5. Measuring cups and measuring spoons
6. Silicone spatula and a wooden spoon for stirring and smoothing the casserole top
7. Colander or a clean kitchen towel to squeeze the spinach really dry
8. Box grater or food processor to shred cheese or pulse the spinach for smoother texture
9. Small bowl for the breadcrumb topping and oven mitts for pulling the dish out of the oven

(Note: dont forget to have a fork or whisk handy to beat the eggs)

FAQ

Spinach Casserole: A Delicious And Nutritious Side Dish Recipe Substitutions and Variations

• Spinach: swap with 1 lb swiss chard or kale (stems removed) or 10 oz frozen mixed greens. Cook the greens until wilted and squeeze well — kale/chard may take a bit longer so give em extra time.
• Cream cheese: use 8 oz ricotta or mascarpone, or blend 1 cup cottage cheese until smooth for a lighter, less tangy base that still gives creaminess.
• Sour cream/plain Greek yogurt: replace with 1 cup crème fraîche or plain full-fat yogurt, or use low-fat Greek yogurt if you want less calories; flavor and texture stay similar.
• Breadcrumbs/crushed crackers: swap for 1 cup panko for extra crunch, or 1 cup crushed Ritz or saltines for buttery flavor, or 1 cup almond meal for a low-carb option; reduce melted butter a little with very absorbent crumbs.

Pro Tips

1) Get the spinach bone dry — seriously. Squeeze it in a clean kitchen towel or cheesecloth until hardly any liquid comes out, or run it through a potato ricer to squeeze and chop at the same time. If it’s even a little watery the casserole will turn out soggy, so take the extra minute.

2) Make the filling ultra smooth by bringing cream cheese to room temp and beating it well before adding the other dairy. A hand mixer or food processor gets rid of lumps fast. If it seems too thick add the milk a tablespoon at a time, and always taste and adjust salt after the cheeses are in, they add more salt than you think. A splash of lemon juice or a little lemon zest brightens the whole thing.

3) For a truly crunchy topping use panko or crushed crackers mixed with melted butter and a tablespoon or two of grated Parmesan. Press it lightly on top so it sticks. If the top is browning too fast, tent with foil for the last 10 minutes. For extra flash broil 1 to 2 minutes at the end but stand right there, it goes from perfect to burnt in no time.

4) Rest, slice, and make-ahead hacks: let the bake cool 8 to 10 minutes before cutting so the middle firms up and you get neat squares. You can assemble it a day ahead and bake straight from the fridge, just add a few extra minutes. To freeze, cool completely, wrap tightly and reheat covered in a 325 to 350 oven until warmed through.