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This fluffy hearty Low Sodium Breakfast Casserole Recipe is made with fresh potatoes, eggs, and Swiss cheese and ready in 60 minutes. The edges turn beautifully golden while the center puffs up hot from the oven. I rely on fresh herbs and roasted vegetables to build flavor instead of salt.

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Why You Will Love This Low Sodium Breakfast Casserole Recipe:

Heart-Healthy & Balanced: Specifically designed for those monitoring their sodium intake, this dish allows you to enjoy a classic comfort meal while staying aligned with your wellness goals.
Flavor-Forward (Without the Salt): Instead of relying on sodium, this recipe uses a clever combination of fresh herbs, aromatic garlic, onions, and bright spices to provide a rich, multi-layered taste profile.
Perfect for Meal Prep: You can bake this casserole on Sunday and have a high-protein, ready-to-reheat breakfast waiting for you every morning of the work week.
Highly Customizable: This base recipe is incredibly forgiving; you can easily swap in whatever seasonal vegetables or low-sodium proteins (like ground turkey or Swiss cheese) you have on hand.
Nutrient-Dense Ingredients: Packed with fiber-rich vegetables and high-quality protein from eggs, it provides sustained energy to keep you full and focused until lunch.
Crowd-Pleasing Texture: With its fluffy egg base and tender-crisp vegetable filling, it has the hearty, satisfying mouthfeel of a traditional brunch bake that the whole family will love.
Budget-Friendly: It utilizes simple, wholesome pantry staples and fresh produce, making it an economical way to feed a group or prep for the week ahead.

Low Sodium Breakfast Casserole Ingredients

8 large eggs
1 cup whole milk
2 cups fresh russet potatoes, peeled and diced small
1 medium onion, diced
1 red bell pepper, diced
1 cup shredded Swiss cheese
2 tablespoons olive oil
1 teaspoon freshly ground black pepper
1 teaspoon garlic powder
2 tablespoons fresh parsley, chopped

How To Make Low Sodium Breakfast Casserole

Preheat the oven: Set your oven to 375F and lightly grease a 9×13 inch baking dish with olive oil.
Sauté the vegetables: Heat oil in a large skillet over medium heat, then cook the potatoes, onions, and bell peppers for 10 minutes until softened and slightly brown.
Whisk the base: In a large bowl, vigorously whisk the eggs, milk, black pepper, and garlic powder until smooth and pale.
Assemble the casserole: Spread the cooked vegetables evenly in the prepared baking dish and sprinkle the Swiss cheese on top.
Pour and bake: Pour the egg mixture over the vegetables, ensuring everything is covered, and bake for 35 to 40 minutes until the center is set.
Garnish and serve: Remove from the oven, let it rest for 5 minutes, and sprinkle with fresh parsley before slicing.

Recipe Tips

Cut potatoes small: Dicing the potatoes evenly ensures they cook completely before the eggs overbake.
Boost the spices: Since we skip salt, using fresh cracked black pepper and garlic powder is crucial for flavor.
Check for doneness: Insert a knife into the center of the bake; it should come out clean when the eggs are fully set.

What To Serve With Low Sodium Breakfast Casserole?

Pair Low Sodium Breakfast Casserole bake with a fresh fruit salad or sliced grapefruit to keep the meal bright and balanced. A side of whole wheat toast with unsalted butter also works well to soak up any remaining egg.

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How To Store Leftovers Low Sodium Breakfast Casserole?

Keep leftover casserole in an airtight container in the fridge for up to 4 days. You can also freeze individual slices wrapped tightly in foil for up to 2 months. Reheat portions gently in the microwave or a warm oven.

How To Reheat Leftovers Low Sodium Breakfast Casserole?

For the best texture, slide your casserole into a preheated 350°F (175°C) oven; cover it with aluminum foil to lock in moisture and bake for 15 to 20 minutes until the center is steaming. If you’re in a morning rush, place an individual slice on a microwave-safe plate and cover it with a damp paper towel; heat on medium power in one-minute intervals to ensure the eggs stay fluffy and tender rather than turning rubbery.

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FAQs

Can I use frozen hash browns instead?
You can, but check the labels carefully. Many frozen potato products contain hidden added sodium.

What other cheeses work well?
Fresh mozzarella or ricotta are excellent low sodium alternatives if you do not like Swiss cheese.

Can I prep this the night before?
Yes. Sauté the vegetables and whisk the eggs ahead of time, storing them separately in the fridge. Combine and bake in the morning.

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