
Savor the Crispy Delights of Cozy Autumn Breakfast Casserole
Embark on a comforting journey with this Cozy Autumn Breakfast Casserole recipe, where roasted vegetables, savory sausage, and fluffy eggs unite to create a dish that feels both hearty and nourishing. The balance of sweet potatoes, mushrooms, and bell peppers delivers the perfect seasonal bite, while kale adds freshness and sausage gives a satisfying richness.
Whether it’s a family breakfast, a holiday brunch, or a make-ahead weekday meal, this casserole transforms simple ingredients into a celebration of fall flavors.
Ideal for an enjoyable weekend morning or a festive table, this recipe captures the cozy essence of autumn with every bite. Ready to elevate your mornings with comfort and flavor? Let’s dive into this straightforward and utterly rewarding recipe.
Flavorful and Hearty: Your New Go-To Cozy Autumn Breakfast Casserole Recipe
This Cozy Autumn Breakfast Casserole not only highlights seasonal vegetables but also balances them with sausage, eggs, and a touch of spice. Unlike typical breakfast casseroles, this version roasts the vegetables first, giving them a depth of flavor and a golden, caramelized edge.
Not just a meal, this is an experience of warm comfort food with a seasonal twist, made simple enough for anyone to prepare. Here’s how you can achieve that perfect combination of roasted vegetables, creamy eggs, and savory sausage, complete with pro tips to ensure success every time.
Serving Suggestions: Pair your Cozy Autumn Breakfast Casserole with a fresh fruit salad, crusty bread, or even a drizzle of hot sauce for an extra kick.
Pro Tips for the Perfect Cozy Autumn Breakfast Casserole:
- Roast Vegetables Properly: Spread vegetables in a single layer to prevent steaming. Roasting brings out natural sweetness and keeps textures vibrant.
- Season Well: Don’t skimp on salt and pepper. Roasted veggies need bold seasoning to shine in the casserole.
- Control Moisture: Allow roasted vegetables to cool slightly before adding to the dish to prevent excess liquid.
- Egg Mixture Balance: Whisk eggs and milk thoroughly for a light, fluffy base that binds the casserole perfectly.
- Cool Before Serving: Letting the casserole rest ensures neat slices and better flavor blending when serving.

Cozy Autumn Breakfast Casserole Recipe
- Preparation time: 25 minutes
- Cooking time: 35 minutes
- Servings: 8
- Equipment: Baking sheet, 9×13-inch baking dish, skillet, whisk, large mixing bowl
With this Cozy Autumn Breakfast Casserole, your kitchen transforms into a place of warmth and seasonal delight, echoing the hearty flavors of fall.
Ingredients:
- 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)
Directions:
- 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.
- 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.
- 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.
- 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.
- Assemble Casserole: Toss sausage and vegetables briefly in the dish, then spread into an even layer. Pour egg mixture evenly over top.
- 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.
- Cool and Serve: Let casserole cool for 10 minutes before slicing. Garnish with extra herbs if desired, then serve warm.
Ready to Relish!
This dish offers a fabulous balance of roasted vegetables, savory sausage, and fluffy eggs, tied together with comforting autumn flavors. You’ll enjoy the sweetness of potatoes, the depth of mushrooms, and the warmth of Old Bay seasoning. Perfect for breakfast or brunch, this Cozy Autumn Breakfast Casserole brings both flavor and joy to your table.
Storage Solutions
Leftover Cozy Autumn Breakfast Casserole can be stored in an airtight container in the refrigerator for up to four days. Reheat slices in the oven for best texture, or use the microwave for convenience. For longer storage, freeze individual portions wrapped in foil, then reheat directly for a quick and cozy meal anytime.
Print
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
- 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
-
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.
-
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.
-
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.
-
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.
-
Assemble Casserole: Toss sausage and vegetables briefly in the dish, then spread into an even layer. Pour egg mixture evenly over top.
-
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.
-
Cool and Serve: Let casserole cool for 10 minutes before slicing. Garnish with extra herbs if desired, then serve warm.
- Prep Time: 25 minutes
- Cook Time: 35 minutes