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Cozy Autumn Breakfast Casserole

Cozy Autumn Breakfast Casserole

With this Cozy Autumn Breakfast Casserole, your kitchen transforms into a place of warmth and seasonal delight, echoing the hearty flavors of fall.

  • Total Time: 1 hour
  • Yield: 8 servings 1x

Ingredients

Scale
  • 8 ounces baby bella mushrooms, quartered
  • 1.5 pounds potatoes, diced into ½-inch cubes (half sweet potatoes, half Yukon gold work beautifully)
  • 1 large red bell pepper, cored and diced
  • 1 medium white or yellow onion, peeled and diced
  • 3 tablespoons olive oil
  • Sea salt and freshly cracked black pepper
  • 1 pound ground Italian sausage (or breakfast sausage)
  • 4 cloves garlic, peeled and minced
  • 2 handfuls roughly chopped fresh kale, tough stems removed
  • 15 large eggs, whisked
  • ⅔ cup milk
  • 1 ½ tablespoons Old Bay seasoning (adjust more or less to taste)

Instructions

  1. Prep Oven and Dish: Preheat oven to 400°F. Line a large baking sheet with parchment paper. Mist a 9×13-inch baking dish with cooking spray and set aside.

  2. Roast Vegetables: Spread mushrooms, potatoes, bell pepper, and onion onto the baking sheet. Drizzle with olive oil, then season with salt and pepper. Toss to coat evenly, spreading in one layer. Roast for 20–25 minutes until potatoes are tender. Transfer roasted vegetables to the prepared baking dish.

  3. Cook Sausage and Kale: While vegetables roast, cook sausage in a skillet over medium-high heat until browned, crumbling as it cooks. Add garlic and kale, sautéing 2–3 minutes until fragrant. Transfer mixture to the baking dish with roasted vegetables.

  4. Whisk Egg Mixture: In a large bowl, whisk together eggs, milk, Old Bay seasoning, plus 1 teaspoon salt and ½ teaspoon pepper until fully combined.

  5. Assemble Casserole: Toss sausage and vegetables briefly in the dish, then spread into an even layer. Pour egg mixture evenly over top.

  6. Bake to Perfection: Bake uncovered for 30–35 minutes, until eggs are set and a toothpick inserted in the center comes out clean. If the top browns too quickly, cover loosely with foil.

  7. Cool and Serve: Let casserole cool for 10 minutes before slicing. Garnish with extra herbs if desired, then serve warm.

  • Author: Sanji
  • Prep Time: 25 minutes
  • Cook Time: 35 minutes