Cheesy Chile Relleno Egg Casserole is a cheesy, chile-studded baked egg dish perfect for feeding a crowd at breakfast, brunch, or dinner.
If you love the idea of classic chile rellenos but don’t love the idea of stuffing, battering, and frying individual peppers, this casserole is your shortcut. It keeps all the roasted chile flavor and gooey cheese, but in an easy layered bake that slides right into the oven.
Here, whole green chiles are laid down like sheets in a lasagna, blanketed with plenty of Monterey Jack and Cheddar. A simple egg, milk, and cream mixture bakes around the chiles until puffed and golden, then everything gets finished with a cozy layer of red enchilada sauce.
The result is a crowd-pleasing dish that’s just as at home on a brunch table as it is on a weeknight dinner menu. Slice it into neat squares, top with cilantro, and let everyone dig into those melty, chile-filled layers.
What You Need to Make This Cheesy Chile Relleno Egg Casserole
- Whole green chiles – Mild canned green chiles give you that signature chile relleno flavor and soft roasted texture with zero roasting or peeling required.
- Monterey Jack cheese – Melts smoothly and brings a creamy, mellow flavor that pairs perfectly with the chiles and eggs.
- Cheddar cheese – Adds a sharper, more robust cheesy bite and helps the top turn beautifully golden and bubbly.
- Large eggs – The base of the casserole; they set around the chiles and cheese to create a soft, sliceable custard-like texture.
- Whole milk – Keeps the egg mixture light and tender so the casserole doesn’t bake up too dense or rubbery.
- Heavy cream – Adds richness and a velvety mouthfeel, making each square taste extra indulgent and satisfying.
- All-purpose flour – Gently thickens the egg mixture so it sets nicely and holds together when you cut into it.
- Baking powder – Gives the egg layer a subtle lift, helping the casserole puff and feel lighter on the plate.
- Garlic powder – Adds savory depth and warmth, giving the custard a gentle garlicky background note.
- Onion powder – Brings sweet, mellow onion flavor that blends smoothly without needing to sauté anything first.
- Salt and black pepper – Essential seasonings to balance the richness and highlight the chile and cheese flavors.
- Red enchilada sauce – Poured over at the end for a tangy, lightly spiced finish that ties the whole casserole together.
- Fresh cilantro – Optional but lovely as a garnish; it adds color and a fresh, herbal pop right before serving.
How to Make This Cheesy Chile Relleno Egg Casserole
STEP 1: Preheat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with cooking spray or a thin film of oil so the cheesy edges release easily after baking.
STEP 2: Drain the canned green chiles well and pat them dry with paper towels. Lay about half of them flat across the bottom of the dish, overlapping slightly so you create an even, chile-lined base.
STEP 3: Sprinkle half of the Monterey Jack and half of the Cheddar evenly over the chiles. Repeat the layers with the remaining chiles and the rest of the cheese, making sure the top is nicely covered.
STEP 4: In a medium bowl, whisk together the eggs, milk, cream, flour, baking powder, garlic powder, onion powder, salt, and pepper until completely smooth. Take a moment to break up any flour lumps so the custard bakes evenly.
STEP 5: Slowly pour the egg mixture over the layered chiles and cheese, aiming to cover everything and letting it seep into the corners. Place the dish in the oven and bake uncovered for about 35–40 minutes, until the top is golden and the center is set.
STEP 6: Carefully remove the casserole from the oven and pour the red enchilada sauce evenly over the top. Return it to the oven for about 5 more minutes, just until the sauce is hot and starting to mingle with the melted cheese.
STEP 7: Let the casserole rest on the counter for at least 5 minutes so the layers can settle. Sprinkle with chopped cilantro if you like, then slice into squares and serve warm.
What to Serve with Cheesy Chile Relleno Egg Casserole
For brunch, this casserole is wonderful next to crispy breakfast potatoes or hash browns, plus a fresh fruit salad to brighten the rich, cheesy eggs and chiles.
If you’re serving it as a dinner main, pair it with Mexican-style rice, charro or black beans, and maybe a simple tossed salad with lime dressing to keep the plate balanced and colorful.
You can also offer toppings on the side—think sour cream, salsa, sliced avocado, or pickled jalapeños—so everyone can customize their slice with a little extra creaminess, heat, or freshness.
Can I assemble this the night before?
Yes, you can. Layer the chiles and cheese, pour the egg mixture over, cover, and refrigerate. Bring it slightly toward room temperature, then bake until the center is set and the top is golden.
What kind of chiles are best here?
Canned whole mild green chiles are ideal because they’re soft, flavorful, and easy to layer. If you prefer more smokiness, you can use roasted and peeled poblano peppers prepared in the same way.
How can I make this casserole spicier?
Use medium or hot enchilada sauce, add a few chopped jalapeños between the chile layers, or sprinkle in some crushed red pepper or hot sauce into the egg mixture before baking.
Can I make this gluten-free?
Yes. Replace the all-purpose flour with a one-to-one gluten-free baking blend or a small amount of cornstarch. The goal is just to lightly thicken the egg mixture so it sets nicely.
Pro Tips for Cheesy Chile Relleno Egg Casserole
- Dry the chiles thoroughly. Extra moisture from the cans can make the casserole watery. Blotting them really well helps the custard stay pleasantly firm and creamy instead of loose.
- Watch the center for doneness. The edges will puff and brown first. Give the dish a gentle shake; you want a slight jiggle in the middle, not a liquid wobble, before adding the sauce.
- Let it rest before cutting. Those few minutes after baking are when the casserole finishes setting. Slicing too early can cause the layers to slip instead of holding neat squares.
Keeping Leftovers Fresh
Once the casserole has cooled to room temperature, cover the baking dish tightly with foil or transfer individual squares to airtight containers. Store in the refrigerator for up to 3–4 days; it reheats well and makes easy breakfasts or quick meals.
For longer storage, wrap cooled portions well and freeze them. They’ll keep their quality for about 2–3 months. Freezing individual pieces makes it easy to grab just what you need for a single serving.
To reheat, warm slices in a 325°F oven until hot all the way through; covering loosely with foil helps keep the top from over-browning. For a faster option, use the microwave in short bursts at medium power so the eggs stay tender and the cheese doesn’t become tough.
Cheesy Chile Relleno Egg Casserole
Ingredients
- 2 cups finely shredded sharp Cheddar
- ½ teaspoon granulated onion seasoning
- ¼ teaspoon freshly ground black pepper
- 1 cup full-fat milk
- 3 tablespoons plain flour
- 2 cans 7 oz each whole green chiles, thoroughly drained and blotted dry
- 1 teaspoon baking powder
- ½ teaspoon garlic powder
- ½ teaspoon kosher salt
- 2 cups shredded Monterey Jack cheese
- 4 large eggs
- ½ cup rich heavy cream
- 1 can 10 oz red enchilada sauce
- Fresh cilantro leaves optional, for topping
Instructions
- Preheat your oven to 350°F (175°C) and lightly coat a 9×13-inch baking dish with non-stick spray or a thin layer of oil.
- Place half of the prepared green chiles evenly along the base of the baking dish. Distribute half of each type of shredded cheese over the chiles. Layer the remaining chiles on top, followed by the rest of the cheese.
- In a mixing bowl, combine the eggs, milk, heavy cream, flour, baking powder, garlic powder, onion powder, salt, and black pepper. Whisk the mixture until it becomes smooth and well-blended.
- Carefully pour the egg mixture over the layers in the baking dish, ensuring even coverage. Transfer to the oven and bake uncovered for 35 to 40 minutes, until the surface is golden and the center is fully set.
- Remove the casserole from the oven and gently pour the enchilada sauce across the top. Return the dish to the oven and bake for an additional 5 minutes.
- Allow the casserole to sit at room temperature for about 5 minutes before slicing. Garnish with freshly chopped cilantro if desired.