Name: Chile Relleno Breakfast Casserole Recipe
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: Mexican-American
Ingredients: 1 lb ground breakfast sausage; 30 oz can of whole green chiles; 8 oz Monterey Jack cheese, cut into 13-14 equal slices; 8 oz Pepper Jack cheese, freshly shredded (Can substitute with Colby Jack or Monterey Jack for a milder dish.); 8 oz Colby Jack cheese, freshly shredded; 1/2 cup all-purpose flour; 1 tsp baking powder; 1/2 tsp dry mustard powder; 1/2 tsp garlic powder; 1/2 tsp onion powder; 1/2 tsp salt; 1/2 tsp black pepper; 1 cup whole milk (Can substitute evaporated milk.); 8 large eggs

Jump to Recipe· 3.9 from 77 reviews

If you love waking up to bold, comforting flavors packed into one unforgettable morning dish, you simply have to try this Chile Relleno Breakfast Casserole Recipe. It takes the classic, cheesy, stuffed chile relleno and transforms it into a hearty, crowd-pleasing casserole that’s perfect for lazy weekend brunches or feeding a hungry family. Imagine savory breakfast sausage, melty Monterey Jack-stuffed green chiles, and a luscious blend of cheeses all baked in a fluffy egg and milk custard—each bite bursting with layers of spicy, creamy, and savory goodness. Whether you’re new to chiles or a longtime lover, this recipe will quickly become your go-to breakfast favorite.

Ingredients You’ll Need

The image shows a white marbled surface with several ingredients arranged neatly. In the front left, there is a small clear glass bowl filled with raw ground meat, next to a small metal cup containing milk. To the right, a white plate holds many pale yellow butter sticks stacked side by side. Behind the butter, four small clear glass bowls contain white flour, two light brown powders, and a mix of black and white pepper. A cluster of seven brown eggs is placed near the center, next to a dark blue bowl full of green roasted peppers. Behind the eggs and peppers, a larger clear glass bowl is heaped with shredded yellow and white cheese. The colors range from creamy whites, pale yellows, browns, and greens, all on the smooth white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Getting this Chile Relleno Breakfast Casserole Recipe just right depends on a handful of simple, yet essential ingredients that contribute amazing flavor, texture, and vibrant color. Each element plays its part, from the spicy green chiles to the perfectly seasoned egg mixture.

1 lb ground breakfast sausage: Adds savory, meaty depth and a little spice that wakes up your taste buds.

30 oz canned whole green chiles: The star of the dish, these bring a mild heat and natural smoky flavor.
8 oz Monterey Jack cheese (cut into slices): Perfect for stuffing inside the chiles, melts into a creamy, gooey center.
8 oz freshly shredded Pepper Jack cheese: Offers a peppery kick and extra gooey texture on top.

8 oz freshly shredded Colby Jack cheese: Adds a mild, buttery cheese layer that balances the spices.
1/2 cup all-purpose flour: Helps thicken the egg mixture for a custardy texture.
1 tsp baking powder: Ensures your casserole sets nicely without becoming dense.

1/2 tsp dry mustard powder: Brings a subtle, tangy undertone that complements the sausage.
1/2 tsp garlic powder: Adds rich, aromatic warmth.
1/2 tsp onion powder: Enhances the savory layers with mild sweetness.
1/2 tsp salt: Balances and intensifies all the flavors.
1/2 tsp black pepper: Offers just enough bite without overpowering.

1 cup whole milk: Creates a creamy base, can substitute with evaporated milk for extra richness.
8 large eggs: The binding agent that transforms everything into a warm, custardy casserole heaven.

How to Make Chile Relleno Breakfast Casserole Recipe

A clear glass mixing bowl is placed on a white marbled surface. Inside the bowl, there are small piles of dry ingredients including white flour, yellow cornmeal, and black pepper. In the background, another clear glass bowl filled with shredded yellow cheese and two brown eggs are visible, slightly blurred. The scene is bright and clean, focusing on the clear separation of each ingredient before mixing. Photo taken with an iphone --ar 4:5 --v 7

Step 1: Cook the Sausage

Start by heating a drizzle of oil in a skillet over medium to medium-high heat, then add the ground breakfast sausage. Cook it until completely browned, breaking it up as you go to get those nice crispy edges. Once done, transfer the sausage onto a paper towel-lined plate to drain off any excess fat—this keeps your casserole from getting greasy and keeps the flavors clean and balanced.

Step 2: Prepare and Stuff the Chiles

Drain the canned green chiles well and lay them on paper towels to soak up any extra liquid—that step prevents sogginess later. Carefully stuff each chile with a slice of Monterey Jack cheese, which melts beautifully inside the pepper, creating a luscious, cheesy center that’s pure indulgence.

Step 3: Mix the Egg Base

In a large bowl, whisk together the flour, baking powder, dry mustard powder, garlic powder, onion powder, salt, and black pepper. Slowly pour in the milk while whisking continuously until you achieve a thick, mostly lump-free paste. Don’t worry if a few tiny lumps remain—they won’t affect the texture. Finally, whisk in all eight eggs until everything is fully combined, forming a rich, custardy batter that will set around your ingredients perfectly.

Step 4: Assemble and Bake

Begin by spreading the cooked breakfast sausage evenly across the bottom of your casserole dish. Lay the cheese-stuffed chiles in a single even layer on top of the sausage, then sprinkle the shredded Pepper Jack and Colby Jack cheeses across the casserole. Carefully pour the egg mixture evenly over every ingredient, letting it seep into all the nooks. Pop your dish in a 350-degree oven and bake for 35-40 minutes until the center is just set and the top looks golden and inviting. Let it rest for 5-10 minutes to firm up for easy slicing.

How to Serve Chile Relleno Breakfast Casserole Recipe

Garnishes

A fresh handful of chopped cilantro or sliced green onions adds a burst of color and herbaceous brightness that perfectly contrasts the richness of the casserole. A dollop of sour cream or a spoonful of your favorite salsa amps up the flavors and adds a cool, tangy finish.

Side Dishes

Pair this casserole with warm corn tortillas or thick slices of buttery toast to soak up every bit of the cheesy, savory goodness. A fresh fruit salad or some roasted breakfast potatoes complement the dish beautifully, adding refreshing balance or hearty textures to round out the meal.

Creative Ways to Present

Try serving individual portions in small ramekins for a charming brunch display, or bring it to your next potluck sliced and arranged on a wooden board surrounded by bowls of salsa, guacamole, and hot sauce for a festive Southwestern-inspired spread.

Make Ahead and Storage

Storing Leftovers

Let the casserole cool completely, then cover tightly with plastic wrap or transfer leftovers to an airtight container. It will keep fresh in the refrigerator for up to 4 days, making it an ideal make-ahead breakfast or snack for busy mornings.

Freezing

This Chile Relleno Breakfast Casserole Recipe also freezes beautifully. Wrap it well with foil and plastic wrap or use a freezer-safe container. For best flavor and texture, consume within 2 months. Thaw overnight in the fridge before reheating.

Reheating

To reheat, pop individual portions in the microwave until warmed through or heat the whole casserole covered with foil at 325 degrees Fahrenheit until hot and bubbly. Adding a little extra shredded cheese on top before reheating keeps that fresh-from-the-oven vibe.

FAQs

Can I make this casserole vegetarian?

Absolutely! Swap out the breakfast sausage for sautéed mushrooms, diced bell peppers, or a plant-based sausage alternative for a delicious meatless version that still packs plenty of flavor.

Are canned green chiles spicy?

Most canned whole green chiles have a mild heat level, but it can vary by brand. If you prefer less spice, opt for the mild variety or reduce the number of chiles. You can also substitute with roasted poblano peppers for a sweeter, milder flavor.

Can I use a different type of cheese?

Yes! While the blend of Monterey Jack, Pepper Jack, and Colby Jack is classic, feel free to experiment with mild cheddar, mozzarella, or even feta for a twist. Just keep in mind how your choice will affect the melting quality and flavor profile.

Is this recipe suitable for meal prep?

Definitely. The Chile Relleno Breakfast Casserole Recipe holds up well in the fridge and freezes nicely, making it perfect for batch cooking breakfasts or brunches you can enjoy throughout the week.

Can I make this dish ahead and bake it later?

Yes! Prepare the casserole up to the assembly step, cover tightly, and refrigerate overnight. When ready, bake as directed. This makes hosting brunches or holiday mornings much easier and stress-free.

Final Thoughts

This Chile Relleno Breakfast Casserole Recipe is such a flavorful, fun way to start your day with a little southwestern flair. Its layers of spicy chiles, melty cheese, and savory sausage wrapped in a fluffy egg custard create an incredibly satisfying breakfast (or brunch) that everyone will love. Trust me, once you try this, it’ll become a cherished staple in your recipe rotation. So go ahead, gather your ingredients, and get ready to impress your loved ones with this deliciously comforting dish!