If you are searching for a meal that is bursting with bold flavors and comforting textures, look no further than this Irresistibly Cheesy Chile Relleno Breakfast Casserole Recipe. Combining the smoky charm of roasted poblano peppers, the creamy gooeyness of melted cheese, and the satisfying fluff of baked eggs, this dish delivers a fiesta of tastes in every bite. It’s the perfect way to start your day with a hearty and colorful breakfast that will have your family and friends asking for seconds. Trust me, once you try this casserole, it will quickly become a staple in your morning rotation!

Ingredients You’ll Need
These simple yet essential ingredients come together to create a dish that’s rich in flavor and texture. Each one plays a unique role — from the smoky poblano peppers that add depth, to the melty cheese that brings that irresistible gooeyness you crave.
- Fresh Poblano Peppers: Choose firm ones for the best roasting and smoky flavor.
- Large Eggs: These provide the protein base and create a fluffy, custardy texture.
- Shredded Cheese: A blend of Monterey Jack and Cheddar adds creaminess; try Pepper Jack for an extra spicy kick.
- Whole Milk: Helps keep the eggs light and tender; feel free to substitute with your favorite non-dairy milk.
- Onion: Yellow or white onions add a subtle sweetness and crunch.
- Garlic Powder: Provides a savory aroma and depth of flavor without overpowering the dish.
- Salt: Essential for balancing and enhancing all the flavors.
- Pepper: Adjust to your taste for just the right hint of spice.
- Salsa: Adds a zesty, tangy contrast that pairs beautifully with the richness of the casserole.
- Avocado: Creamy and luscious, it offers a fresh and cooling complement to the baked casserole.
How to Make Irresistibly Cheesy Chile Relleno Breakfast Casserole Recipe
Step 1: Preheat and Prepare Your Baking Dish
Start by preheating your oven to 375°F (190°C). Then, grease your baking dish generously with cooking spray or butter to ensure the casserole doesn’t stick and creates a delightful golden crust around the edges.
Step 2: Roast the Poblano Peppers
Place your fresh poblano peppers on a baking sheet and roast them in the oven until they are charred and blistered, about 20 minutes. Remember to turn them occasionally to get that smoky, even roast, which is the secret to their irresistible flavor.
Step 3: Whisk Together Eggs and Milk
In a large mixing bowl, whisk the eggs and whole milk together until the mixture is frothy and well combined. Then, add garlic powder, salt, and pepper to taste. This mixture is what gives the casserole its light and fluffy texture, bursting with savory notes.
Step 4: Assemble the Casserole
Once the poblano peppers have cooled slightly, chop them up and layer evenly in the greased baking dish. Pour your seasoned egg mixture over the peppers, then sprinkle the shredded cheese generously on top, ensuring every bite will be cheesy and melt-in-your-mouth good.
Step 5: Bake to Perfection
Pop the assembled dish into your preheated oven and bake for 30 to 35 minutes. You’re looking for the eggs to be set firmly and the cheese on top to be a beautiful golden brown. This is when the casserole develops its irresistible crust and the cheeses melt into rich pockets of flavor.
Step 6: Let It Cool and Add Your Favorites
Allow the casserole to cool for about 5 to 10 minutes before slicing – this resting time helps everything set nicely. Right before serving, top with fresh salsa or creamy avocado slices for a burst of freshness that contrasts perfectly with the warm, cheesy goodness.
How to Serve Irresistibly Cheesy Chile Relleno Breakfast Casserole Recipe
Garnishes
A sprinkle of fresh cilantro, a dollop of salsa, and slices of ripe avocado can elevate the flavors while adding a touch of vibrant color. These garnishes offer fresh textures that brighten up the rich casserole without overpowering it.
Side Dishes
This casserole pairs wonderfully with light, crisp side salads or fresh fruit bowls to balance out the richness. Consider serving it alongside a tangy pico de gallo or crunchy tortilla chips for a truly festive meal.
Creative Ways to Present
For brunch presentations, serve the casserole in individual ramekins or layer it in a clear glass dish to show off the beautiful layers. You can also portion it into breakfast burritos or tacos for a portable, fun twist on this classic recipe.
Make Ahead and Storage
Storing Leftovers
Wrap any leftovers tightly with plastic wrap or transfer them into an airtight container and refrigerate. The casserole stays fresh and flavorful for up to 3 days, making it perfect for next-day breakfasts or quick meals.
Freezing
If you want to keep this delicious goodness even longer, freeze the casserole in single portions. Use freezer-safe containers or heavy-duty freezer bags and label with the date. It will maintain its quality for up to 2 months.
Reheating
To reheat, thaw in the refrigerator overnight if frozen, then warm individual portions in the microwave for about 1-2 minutes or in a preheated oven at 350°F (175°C) until heated through. This will refresh the casserole’s ooey-gooey texture and bring it back to life.
FAQs
Can I use other types of peppers besides poblano for this casserole?
Absolutely! While poblano peppers provide a mild smoky flavor, you can experiment with bell peppers for sweetness or jalapeños for extra heat. Just adjust roasting times and spice levels accordingly.
Is this casserole suitable for meal prepping?
Yes, this Irresistibly Cheesy Chile Relleno Breakfast Casserole Recipe is perfect for meal prepping. You can assemble it in advance and bake just before serving, saving time on busy mornings.
Can I make this recipe dairy-free?
Definitely. Swap out the shredded cheese for a dairy-free cheese alternative and use plant-based milk instead of whole milk. Be sure to choose ingredients that melt and blend well for the best texture.
What can I add to make this casserole spicier?
If you love heat, add diced jalapeños or a few dashes of hot sauce to the egg mixture. Using pepper jack cheese instead of a mild blend also amp ups the spice in a delicious way.
How do I know when the casserole is fully cooked?
The casserole is done when the eggs are fully set and the top is golden brown. You can also insert a knife or toothpick into the center; it should come out clean without runny egg.
Final Thoughts
This Irresistibly Cheesy Chile Relleno Breakfast Casserole Recipe is more than just a breakfast dish; it’s a celebration of flavor, texture, and comfort all baked into one. Whether you’re preparing a special weekend brunch or a make-ahead weekday meal, this casserole is sure to impress. So grab those fresh poblano peppers and get ready to enjoy a breakfast experience that you and your loved ones won’t forget. Happy cooking!
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Irresistibly Cheesy Chile Relleno Breakfast Casserole Recipe
- Prep Time: 15 minutes
- Cook Time: 50 minutes
- Total Time: 1 hour 5 minutes
- Yield: 6 servings
- Category: Breakfast Casserole
- Method: Baking
- Cuisine: Mexican-inspired
- Diet: Gluten Free
Description
This Irresistibly Cheesy Chile Relleno Breakfast Casserole combines roasted poblano peppers with a fluffy egg mixture and a melty blend of cheeses, creating a delicious and satisfying breakfast dish. Enhanced with garlic, salsa, and creamy avocado, it’s a perfect make-ahead casserole to start your day with a spicy, cheesy kick.
Ingredients
Vegetables and Toppings
- 4 pieces Fresh Poblano Peppers (Choose firm ones for best results.)
- 1 medium Onion (Yellow or white onions work best.)
- 1 cup Salsa (Zesty addition.)
- 1 large Avocado (Luscious contrast.)
Egg Mixture
- 6 large Eggs (Essential protein.)
- 1 cup Whole Milk (Can swap for non-dairy alternatives.)
- 1 teaspoon Garlic Powder (Boosts flavor.)
- Salt to taste (Essential for balancing flavors.)
- Pepper to taste (Adjust according to your taste.)
Cheese
- 2 cups Shredded Cheese (Blend of Monterey Jack and Cheddar; try Pepper Jack for extra spice.)
Instructions
- Preheat the Oven: Preheat your oven to 375°F (190°C) and grease a baking dish with cooking spray or butter to prevent sticking.
- Roast the Poblanos: Place the fresh poblano peppers on a baking sheet and roast them in the oven for about 20 minutes, turning occasionally until they are charred and blistered. This develops their flavor and softens them.
- Prepare Egg Mixture: In a large mixing bowl, whisk together the eggs and whole milk until frothy. Add garlic powder, salt, and pepper to your taste to season the mixture.
- Assemble the Casserole: Chop the roasted poblano peppers and layer them evenly in the greased baking dish. Pour the seasoned egg mixture over the peppers, then sprinkle the shredded cheese evenly on top.
- Bake: Bake the assembled casserole for 30 to 35 minutes, or until the eggs are fully set and the cheese on top turns golden brown and bubbly.
- Cool and Serve: Allow the casserole to cool for about 5 to 10 minutes to set properly. Serve with a dollop of salsa or slices of fresh avocado for a creamy and zesty finish.
Notes
- For extra spice, substitute the Monterey Jack and Cheddar cheese blend with Pepper Jack cheese.
- Whole milk can be replaced with non-dairy alternatives such as almond or oat milk for a dairy-free version.
- Make sure to char the poblanos well for the best smoky flavor.
- This casserole can be prepared the night before; just refrigerate and bake in the morning for a quick breakfast.
- Add diced onions into the egg mixture if you prefer an extra layer of flavor and texture.

