Name: Roasted Potato and Veggie Breakfast Casserole with Cheddar Recipe
Prep time: 20 min
Cook time: 1 h 5 min
Total time: 1 h 25 min
Cuisine: American
Ingredients: 3 Yukon Gold potatoes, about 1 pound, chopped into ¼-inch pieces, or 1 pound frozen hash brown potatoes; 1 tablespoon extra-virgin olive oil; ½ teaspoon sea salt; Freshly ground black pepper, to taste; 12 large eggs; 1 cup milk; 1¼ teaspoons sea salt, divided; 2 tablespoons extra-virgin olive oil, plus more for the baking dish; ½ medium yellow onion, chopped; Freshly ground black pepper, to taste; 2 garlic cloves, chopped; 1 red bell pepper, stemmed, seeded, and chopped; 1 green bell pepper, stemmed, seeded, and chopped; 1 cup fresh spinach, roughly chopped; 4 green onions, chopped, divided; 1½ cups shredded cheddar cheese, divided

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If you’ve been searching for a breakfast that brings warmth, comfort, and a burst of flavor to your morning table, look no further than this Roasted Potato and Veggie Breakfast Casserole with Cheddar Recipe. This dish combines golden roasted potatoes, vibrant vegetables, and gooey melted cheddar cheese into one irresistible casserole that’s perfect for lazy weekends or holiday brunches. Each bite offers a delightful mix of crispy edges, soft eggs, and fresh veggies, making it a dish to cherish and share with friends and family alike.

Ingredients You’ll Need

A white bowl filled with fresh green spinach leaves sits at the bottom center, next to a carton of brown eggs arranged in two rows. Above the spinach, a white bowl holds chopped red bell peppers, green bell peppers, chopped white onions, and three whole garlic cloves, evenly arranged by color. To the right, another white bowl is heaped with shredded yellow cheese. Beside it, a small clear bowl contains chopped green onions. A white plate with mixed salt and black pepper is near the top. On the left, a wooden board holds three whole yellow potatoes and several small potato cubes with a small knife beside them. There are small glass jars of olive oil and milk around the bowls. The scene is set on a white marbled surface, with a yellow cloth partially under the spinach bowl. Photo taken with an iphone --ar 4:5 --v 7

Gathering your ingredients for this casserole is a breeze, and every item plays a key role in building a rich, multi-dimensional flavor profile. From the creamy eggs to the earthy roasted potatoes, each element complements the other for a balanced texture and vibrant colors that make this dish pop on your plate.

Yukon Gold potatoes (3): These provide the perfect buttery texture and crispiness when roasted.
Extra-virgin olive oil (3 tablespoons total): Helps roast potatoes to a golden crisp and sautés the veggies with a lovely richness.
Sea salt (1¾ teaspoons): Enhances every flavor without overpowering the dish.
Freshly ground black pepper: Adds a subtle heat and aromatic lift.
Large eggs (12): The binding, creamy base of the casserole that holds everything together.
Milk (1 cup): Makes the eggs tender and silky for the perfect custard texture.
Yellow onion (½ medium): Adds a natural sweetness and depth once sautéed.
Garlic cloves (2): Infuses the casserole with warm, savory notes.
Red and green bell peppers (1 each): Brighten up the casserole with their crunchy texture and fresh flavor.
Fresh spinach (1 cup): Brings a touch of green, tender freshness, and nutrition.
Green onions (4): Sprinkle some mild onion flavor and a lovely pop of color.
Shredded cheddar cheese (1½ cups): Melts beautifully for a rich, comforting finish.

How to Make Roasted Potato and Veggie Breakfast Casserole with Cheddar Recipe

Step 1: Roast the Potatoes

Start by preheating your oven to a toasty 425°F. Toss those Yukon Gold potatoes with a tablespoon of olive oil, sea salt, and freshly ground black pepper. Spread them out evenly on a parchment-lined baking sheet so each piece crisps up perfectly. Roast for about 20 to 25 minutes until they’re just tender inside and have that irresistible golden-brown crunch. This step brings out the natural sweetness and transforms simple potatoes into the star foundation of your casserole.

Step 2: Prep the Vegetable Mixture

Once your potatoes are roasting, reduce the oven temperature to 350°F and grease your 9×13-inch baking dish with a bit of olive oil. Using a large skillet, warm 2 tablespoons of olive oil over medium heat. Sauté the chopped onion with the remaining salt and pepper for 5 to 8 minutes until wonderfully soft and fragrant. Add the garlic, diced red and green peppers, and cook for another couple of minutes. Toss in the chopped spinach along with half of the green onions until the spinach just wilts—this combination gives the casserole vibrant color and fresh garden flavor.

Step 3: Whisk Together the Egg Mixture

In a large bowl, whisk 12 eggs with 1 cup milk and a quarter teaspoon of sea salt until the mixture is smooth and slightly frothy. This creamy egg base will bind all the ingredients beautifully, creating a luscious, custard-like texture once baked.

Step 4: Assemble the Casserole

Layer your roasted potatoes evenly in the prepared baking dish. Sprinkle a cup of shredded cheddar cheese over the potatoes, then spoon your sautéed veggies on top. Pour the egg mixture evenly across the entire dish, letting it settle around all the ingredients. Finish by sprinkling the remaining half-cup of cheese and reserved green onions on top—you’re setting the stage for a cheesy, colorful crust as it bakes.

Step 5: Bake to Perfection

Pop your casserole into the oven and bake for 40 to 45 minutes or until the eggs are fully set and the cheese on top bubbles and turns golden. Once out of the oven, allow it to rest for 5 minutes before slicing—this makes serving easier and ensures every piece holds together perfectly.

How to Serve Roasted Potato and Veggie Breakfast Casserole with Cheddar Recipe

The image shows a baked vegetable casserole in a white rectangular baking dish, cut into six square pieces with one piece removed. The casserole has a textured top layer with melted golden brown cheese and colorful chunks of green, orange, and yellow vegetables like spinach, carrots, and zucchini spread evenly. A white plate beside the dish holds the removed square piece, showing the multi-layered inside filled with mixed vegetables and melted cheese. A fork with orange and silver handle rests on the plate, holding a small bite of the casserole. The whole scene is set on a white marbled surface with a yellow and white checkered cloth partially visible nearby. photo taken with an iphone --ar 4:5 --v 7

Garnishes

When it comes to garnishing, fresh herbs like chopped parsley or chives add a lovely fresh burst of flavor and a touch of brightness. A dollop of sour cream or a drizzle of hot sauce can bring a creamy or spicy contrast that elevates each mouthful to new heights. Consider sprinkling extra cheddar for those who just can’t get enough cheesy goodness.

Side Dishes

This casserole pairs wonderfully with crisp, refreshing side dishes. A simple mixed green salad with a light vinaigrette balances out the richness, while fresh fruit like orange slices or berries add a naturally sweet complement. For an extra touch of indulgence, serve alongside buttered toast or warm, flaky croissants to round out a truly satisfying breakfast or brunch.

Creative Ways to Present

If you want to impress guests, serve the Roasted Potato and Veggie Breakfast Casserole with Cheddar Recipe in individual ramekins or mini cast iron skillets. This not only looks adorable but also helps with portion control. Layering with colorful roasted red peppers or a sprinkle of paprika on top can give each serving that wow factor. You could even top it with avocado slices or a poached egg for a trendy twist.

Make Ahead and Storage

Storing Leftovers

After enjoying your casserole, store any leftovers in an airtight container in the refrigerator. It will keep beautifully for up to 3 days. The flavors meld even more overnight, making for an equally delicious next-day breakfast or snack that reheats easily.

Freezing

If you want to make this casserole your go-to breakfast for busy mornings, you can freeze it! Cut the casserole into portions, wrap them individually in plastic wrap and foil, and freeze for up to 2 months. This makes mornings a breeze when you just want to heat and eat.

Reheating

To reheat, bake leftover portions in a preheated 350°F oven for about 15 minutes or until warmed through. Alternatively, a quick zap in the microwave works well if you’re in a hurry, though it might sacrifice a bit of that crispy texture on the edges you loved fresh out of the oven.

FAQs

Can I use frozen potatoes instead of fresh Yukon Golds?

Absolutely! Using frozen hash brown potatoes works well and can save prep time, though fresh Yukon Gold potatoes give you an extra buttery crispness.

What can I substitute if I don’t have cheddar cheese?

Sharp mozzarella, Monterey Jack, or even a blend with Parmesan can provide delicious alternatives that melt nicely and offer a different flavor profile.

Can I add meat to this casserole?

Yes, cooked sausage, bacon, or ham can be stirred into the veggie mixture for a heartier dish that’s perfect for meat lovers.

Is this casserole gluten-free?

Yes! Since there are no flour-based ingredients, this casserole is naturally gluten-free, making it safe for those with gluten sensitivities.

How far ahead can I assemble this breakfast casserole?

You can assemble the casserole the night before, cover it tightly, and refrigerate it. In the morning, just bake as directed, although you may need to add a few extra minutes to the baking time.

Final Thoughts

I can’t recommend this Roasted Potato and Veggie Breakfast Casserole with Cheddar Recipe enough for anyone craving a wholesome and flavorful breakfast. Its blend of crispy potatoes, fresh veggies, and cheesy, fluffy eggs is simply the kind of comfort food that makes mornings special. Trust me, once this casserole graces your table, it will become a beloved classic you reach for time and again.