The Ultimate Cheesy Vegetarian Hash Brown Breakfast Casserole

Imagine a lazy Sunday morning with the sun streaming in. You want a meal that feels like a warm hug. This Vegetarian Hash Brown Breakfast Casserole is exactly that.

It is the ultimate hero for your next spring brunch. Whether it is Easter or Mother’s Day, this dish delivers. You get crispy potatoes and melty cheese in every single bite.

Why You’ll Love This Recipe

This recipe is a total game-changer for busy mornings. It is budget-friendly and uses simple pantry staples. You can feed a whole crowd without breaking a sweat.

The texture is what makes it truly special. The sour cream makes the egg custard incredibly creamy. It is the perfect Vegetarian Hash Brown Breakfast Casserole for your holiday guests.

Simple Cooking Steps

Making this is as easy as it gets. You just sauté, whisk, and layer. Even a total beginner can master this dish on the first try.

Most of the work happens in the oven. That gives you time to enjoy your coffee. You will love how effortless it feels to put together.

Ingredients You’ll Need

We are using fresh seasonal produce to make these flavors pop. Here is what you need to grab from the store:

• 30 oz frozen shredded hash browns, thawed
• 8 large eggs
• 1 cup whole milk
• 1/2 cup sour cream
• 2 cups shredded sharp cheddar cheese, divided
• 1 medium onion, finely diced
• 1 bell pepper, diced
• 2 cups fresh baby spinach, chopped
• 1 teaspoon garlic powder
• 1 teaspoon kosher salt
• 1/2 teaspoon ground black pepper
• 1/4 teaspoon smoked paprika

Step-by-Step Directions

1. Preheat the oven to 375°F (190°C) and grease a 9×13 inch baking dish.
2. Sauté the diced onion and bell pepper until softened, about 5 minutes.
3. Add spinach to the pan and cook until just wilted.
4. Whisk eggs, milk, sour cream, and all spices in a large bowl.
5. Layer thawed hash browns in the bottom of your baking dish.
6. Spread the sautéed vegetables evenly over the potato layer.
7. Sprinkle 1.5 cups of cheddar cheese over the veggies.
8. Pour the egg mixture slowly over everything to ensure coverage.
9. Top with the remaining cheese and bake for 40 to 45 minutes.
10. Rest for 10 minutes before slicing into squares.

Best Ways to Enjoy It

Serve this warm while the cheese is still gooey and bubbling. It looks beautiful on a brunch spread next to fresh fruit. You can even top it with a splash of hot sauce.

Pair it with a crisp side salad for a light lunch. It is impressive enough for a holiday but easy enough for a Tuesday. Your family will keep asking for seconds!

How to Store Leftovers

This casserole is a meal prep dream. Store leftovers in an airtight container in the fridge. It stays fresh for up to four days. Reheat slices in the oven to keep the edges crispy.

Tips for Best Results

• Always thaw your hash browns completely before starting.
• Pat the potatoes dry to avoid a soggy casserole.
• Use sharp cheddar for the boldest flavor profile.
• Sauté the veggies well to remove excess moisture.
• Let it rest for 10 minutes so it sets perfectly.
• Don’t overbake or the eggs might get rubbery.
• Grease your pan well for an easy cleanup.

Ways to Switch It Up

• Swap cheddar for pepper jack to add a spicy kick.
• Add sautéed mushrooms for an earthy, deep flavor.
• Try using tater tots instead of shredded hash browns.
• Stir in some feta cheese for a salty tang.

FAQs

Can I make this ahead of time?

Yes, you can prep the layers the night before. Just pour the egg mixture on right before baking. This makes holiday mornings so much smoother.

Can I use fresh potatoes?

You can, but you must grate and soak them first. Frozen hash browns are a huge time-saver for this recipe. Just make sure they are thawed.

You need this cheesy goodness on your table immediately! Tag me when you make it!

— Jasmine

Vegetarian Hash Brown Breakfast Casserole

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr

Servings: 8 servings

Calories: 345

Ingredients Method

Ingredients

  

• 30 oz frozen shredded hash browns, thawed
• 8 large egg s
• 1 cup whole milk
• 1/2 cup sour cream
• 2 cups shredded sharp cheddar cheese, divided
• 1 medium onion , finely diced
• 1 bell pepper , diced
• 2 cups fresh baby spinach, chopped
• 1 teaspoon garlic powder
• 1 teaspoon kosher salt
• 1/2 teaspoon ground black pepper
• 1/4 teaspoon smoked paprika

Method

 

1. Preheat the oven to 375°F (190°C) and grease a 9x13 inch baking dish with butter or non-stick spray.
2. In a skillet over medium heat, sauté the diced onion and bell pepper until softened, approximately 5 minutes; add spinach and cook until just wilted.
3. In a large mixing bowl, whisk together the eggs, milk, sour cream, garlic powder, salt, black pepper, and smoked paprika until well combined.
4. Place the thawed hash browns in an even layer at the bottom of the prepared baking dish.
5. Distribute the sautéed vegetables evenly over the hash browns.
6. Sprinkle 1.5 cups of the shredded cheddar cheese over the vegetable layer.
7. Pour the egg mixture slowly over the hash browns and vegetables to ensure even coverage.
8. Top with the remaining 0.5 cup of cheddar cheese.
9. Bake for 40 to 45 minutes, or until the center is firm and the cheese is golden and bubbling.
10. Remove from the oven and allow the casserole to rest for 10 minutes before slicing.