
Chile relleno casserole with roasted green chiles, Monterey Jack, a light egg-and-milk custard, and tomato sauce. An easy baked dinner that keeps the classic chile relleno flavor profile in a simpler casserole format.
Drain the chiles thoroughly and pat them dry if needed so the casserole sets properly rather than turning watery.
Let the bake rest for 5 to 10 minutes before slicing so the custard has time to firm up.
Spread the chiles into even layers rather than leaving them in thick folds so each portion gets a better balance of chile, cheese, and custard.
If your tomato sauce tastes very sharp, a tiny pinch of sugar can soften it without making the casserole sweet.
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Heat the oven to 175C or 350F.
Layer half of the drained green chiles evenly into a medium baking dish.
Scatter half of the shredded cheese over the chiles.
Add the remaining chiles in an even layer.
Whisk the egg whites and milk together until fully combined.
Pour the mixture evenly over the layered chiles and cheese.
Spoon or pour the tomato sauce evenly over the top.
Finish with the remaining cheese.
Bake for about 40 minutes, until the casserole is set and golden in spots.
Rest for 5 to 10 minutes, then slice and serve warm.
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Everything you want to know about this recipe.
Chile relleno casserole is the practical version of classic chile relleno flavors: roasted green chiles, melted cheese, tomato sauce, and a soft egg-based custard baked into one dish. You keep the comfort and savoriness of the original idea without having to stuff, batter, and fry individual peppers.
This version stays simple on purpose. It is designed for a weeknight bake rather than a special-occasion project, but it still gives you the familiar balance of chile, cheese, and sauce that makes chile relleno so satisfying.
The layered format is what makes this recipe practical. Instead of relying on a heavy batter, the egg white and milk mixture creates a lighter custard that sets around the chiles and cheese during baking.
Draining the chiles properly is also important. Too much moisture is what turns this kind of casserole watery, so a little care at the start makes a real difference to the final texture.
Canned whole green chiles keep the recipe accessible and fast. Monterey Jack melts well and matches the mild heat of the peppers without overwhelming them.
Tomato sauce gives the top its familiar red layer, while the egg-and-milk base helps the casserole hold together once baked. If you want a richer result, whole eggs can be used instead of egg whites.
Start by layering half of the drained chiles and half the cheese in the baking dish, then add the remaining chiles. Whisk the egg whites with the milk and pour that over the dish so it settles between the layers.
Top with tomato sauce and the rest of the cheese, then bake until set and golden in spots. Give it a short rest before slicing so the casserole holds together better on the plate.
This casserole works well with a fresh topping such as cilantro, sliced jalapeno, or a spoonful of Greek yogurt or sour cream. Those extras help balance the baked cheese and tomato.
Serve it with rice, beans, avocado, or a crisp salad depending on how substantial you want the meal to feel. Leftovers also reheat well, which makes this a useful make-ahead dinner.
Serving Size: 1 portion
* Reference intakes are based on an average adult's 8,400 kJ / 2,000 kcal diet. Your needs may be higher or lower.
Yes. Whole eggs will give a richer, firmer custard, though the casserole will no longer be as light.
A simple salad, rice, beans, or sliced avocado all work well, depending on whether you want a lighter or fuller meal.
Yes. You can assemble it ahead and refrigerate before baking, or bake it fully and reheat portions later.
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4 ratings
How would you rate this recipe?
Better structure than some overly soupy chile casseroles. The rest time at the end mattered.
Good lighter casserole. I added a little cilantro on top after baking and liked the freshness.
I drained the chiles really well and it set nicely. Served it with a simple salad and that was enough for dinner.
This was much easier than stuffing and frying individual chiles. Good weeknight version when you still want those flavors.
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