This breakfast casserole has been my weekend morning hero for years. I first put these ingredients together one Sunday when our family was craving something bright and savory after a late Saturday night. The combination of tender spinach, tangy artichoke hearts, and chewy sun-dried tomatoes tucked into an egg and cottage cheese custard created a texture that is both silky and substantial. It feels celebratory but is simple enough to become a weekday staple. Every time I pull it from the oven the kitchen fills with a warm, herbaceous aroma that makes everyone gather — the kind of dish that invites seconds and leaves plates wiped clean. What makes this casserole special is the balance of flavors and textures: the salt bite of feta, the umami-sweet concentrated sun-dried tomatoes, the creamy lift from cottage cheese, and the gentle green freshness of spinach. It’s versatile too — I discovered that swapping sunflower seeds for a crunchy topping makes it a hit with kids, while adding red pepper flakes gives it a grown-up kick. It travels well too; I’ve taken slices to potlucks and holiday brunches and always come home with requests for the recipe.

Ingredients

• Olive oil: Use one tablespoon of a good-quality extra-virgin olive oil such as California Olive Ranch or Colavita. It provides the initial caramelization for the shallot and carries the aromatics without overpowering the other ingredients.
• Shallot: One medium shallot, minced finely. Shallot adds a sweet, delicate onion flavor that is less aggressive than yellow onion — look for firm, dry skins and avoid any soft spots.
• Spinach: Four cups packed fresh spinach leaves. Baby spinach works well because it wilts quickly and does not need long cooking. If using mature leaves, remove tough stems.
• Garlic: Two cloves, minced. Fresh garlic brightens the vegetable base; avoid pre-minced jarred garlic for best flavor.
• Artichoke hearts: One 14-ounce can, drained and chopped. Quartered or marinated artichoke hearts both work; if packed in oil, drain and blot to control added fat.
• Sun-dried tomatoes: One 7-ounce jar, drained and chopped. If your jarred tomatoes are packed in oil, drain well and blot; packings in oil add richness while dry-packed tomatoes bring a chewier, concentrated sweetness.
• Eggs: Eighteen large eggs. They create a custard that sets into a tender, sliceable pan of savory breakfast goodness.
• Cottage cheese: One and a half cups (use small-curd 2 percent or whole milk cottage cheese for creaminess). It keeps the custard moist and adds a subtle tang and protein boost.
• Milk: One half cup whole milk or 2 percent. Use skim for lower fat, but whole milk yields a silkier finish.
• Feta cheese: One half cup crumbled. Choose a tangy feta such as a sheep or sheep-goat blend for bright, salty contrast. Reserve a little for topping so some feta melts into pockets.
• Salt and black pepper: Kosher salt and freshly ground black pepper to taste; seasoning at both the vegetable and custard stages builds depth.
• Fresh herbs for garnish: Chopped parsley, basil, or chives to brighten the finished dish.

Instructions

Preheat and prepare: Preheat your oven to 350 degrees F. Grease a 9x13-inch baking dish thoroughly with nonstick spray or a light brush of oil to help the edges brown and release cleanly after baking. Set the dish aside while you prepare the vegetables and custard. This step ensures everything goes into the oven hot and cooks evenly. Sauté the aromatics and greens: In a large skillet, heat one tablespoon olive oil over medium-high heat until shimmering. Add the minced shallot and cook for about two minutes until translucent and slightly sweet, stirring so it does not brown too quickly. Stir in the minced garlic and the packed spinach. Cook for about three minutes, tossing frequently, until the spinach is fully wilted and any excess liquid has evaporated. Remove from the heat promptly to avoid overcooking and bitterness. Combine vegetables: To the wilted spinach mixture, fold in the drained and chopped artichoke hearts and the chopped sun-dried tomatoes. Taste and season with kosher salt and freshly ground black pepper; the feta will add additional saltiness later, so be cautious. Spread this vegetable mixture evenly across the bottom of the prepared baking dish so every square has a bit of the vegetable base. Whisk the custard: In a large mixing bowl, whisk together the eighteen large eggs, one and a half cups cottage cheese, and one half cup milk until smooth and homogenous. Season this custard lightly with salt and black pepper. The cottage cheese helps create a moist, custardy texture and stabilizes the set so slices hold together when cut. Assemble and top: Pour the egg and cottage cheese mixture evenly over the vegetable layer in the baking dish. Use a spatula to gently stir once or twice so the custard distributes around the vegetables but does not completely blend them. Sprinkle the half cup crumbled feta evenly over the top so it melts into little pockets during baking, adding bursts of tangy flavor. Bake and rest: Bake in the preheated oven for 30 to 40 minutes. The casserole is done when the center is set and a toothpick inserted near the middle comes out clean and the edges are lightly golden. Watch the last ten minutes to avoid over-browning. Remove from the oven and let it cool for about five minutes — this short rest helps the custard firm for cleaner slices.

Storage Tips

Allow the pan to cool to room temperature before covering to avoid condensation that can make reheated slices soggy. Store airtight in the refrigerator for up to four days. For freezing, cut into individual portions, wrap each piece tightly in plastic wrap and then foil, and freeze for up to three months. Reheat frozen slices in a 350 degrees F oven for about 12 to 18 minutes from thawed, or 20 to 25 minutes from frozen, covered loosely with foil until warmed through. Microwaving works for single servings; reheat at 50 percent power in 30-second increments to retain a tender texture.

Ingredient Substitutions

If you don’t have cottage cheese, full-fat ricotta is an excellent substitute; use a 1:1 swap and break up any large curds before whisking. For a dairy-free option, replace cottage cheese and milk with a silken tofu and unsweetened almond milk blend and omit feta or use a dairy-free crumble. If you prefer a milder flavor, swap sun-dried tomatoes for roasted red peppers (drained and chopped) at a 1:1 ratio — they add sweetness without the chew. Spinach can be swapped for baby kale, but increase the sauté time to remove toughness.

Serving Suggestions

Serve warm squares with a crisp green salad tossed in lemon vinaigrette for a brunch plate that balances richness. Add roasted potatoes or a grain salad for heartier fare. Garnish slices with chopped parsley, basil, or chives and a light grind of pepper to brighten each serving. For a breakfast-for-dinner vibe, pair with crusty toast and a side of fresh fruit. Individual slices are portable and make great additions to lunchboxes; pack with a small container of yogurt or a handful of cherry tomatoes.

Cultural Background

This dish is a modern, Mediterranean-inspired mashup that borrows components from classic warm dips and Italian antipasti: sun-dried tomatoes and artichokes are common in coastal Mediterranean cuisines, while spinach and feta nod to Greek flavors. The egg custard approach is related to frittatas and quiches from European tradition, but assembled in a casserole pan for crowd-friendly baking. This blend creates a familiar yet slightly unexpected profile that feels both homely and elegant.

Seasonal Adaptations

In spring and summer, fold in blanched asparagus tips or peas for freshness. In late summer and fall, swap sun-dried tomatoes for oven-roasted cherry tomatoes and add a handful of chopped basil at the end. For the holidays, increase the feta to one cup and sprinkle toasted pine nuts on top before baking for a festive crunch. The basic method adapts to seasonal produce with minimal change to timing.

Meal Prep Tips

Assemble the casserole the night before and keep covered in the refrigerator; baking time may increase by five to ten minutes if chilled through. Portion slices into containers for grab-and-go mornings, and include a small ice pack if transporting overnight. Use glass or metal containers for reheating in the oven; they retain heat evenly. Label containers with the date and reheat instructions for easy family access during busy weeks.

This casserole brings together reliable pantry ingredients and fresh greens to create a memorable meal that feels special without demanding a lot of time. Whether you are feeding a crowd or prepping breakfasts for the week, the balance of textures and bright flavors makes it a repeat favorite in my kitchen. Try it once and you will understand why it shows up at my table again and again.