Cheesy Hash Brown Breakfast Casserole

Ingredients

• Cooking spray or oil
• 1 tablespoon olive oil
• 1 pound uncooked breakfast sausage, casings removed
• 1 medium onion, diced
• 1 medium red bell pepper, cored, seeded, and diced
• 3/4 teaspoon kosher salt, divided
• 1 (20-ounce) bag frozen shredded potatoes (do not thaw)
• 10 large eggs
• 1 cup sour cream
• 1 cup whole or 2% milk
• 2 tablespoons Dijon mustard
• 1 1/2 cups shredded sharp cheddar cheese (about 6 ounces)
• 1/4 teaspoon freshly ground black pepper

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