Chile Relleno Casserole (From Colorado Cache Cookbook)

Chile Relleno Casserole is a warm, cheesy, comforting dish inspired by classic chile rellenos, but made in an easier baked casserole style. Instead of individually frying stuffed chiles, this version layers whole green chiles with Monterey Jack cheese, a simple egg-milk batter, and plenty of mild cheddar on top.

The flavor is rich, soft, savory, and deeply satisfying. The green chiles bring gentle heat and earthy flavor, while the Monterey Jack melts inside them and the cheddar creates a golden, cheesy top.

This is the kind of casserole that feels cozy and generous. It is perfect for brunch, family dinners, potlucks, holidays, or any time you want the flavor of chile rellenos without the extra work.

Why People Will Love Chile Relleno Casserole (From Colorado Cache Cookbook) Recipe

It has the flavor of chile rellenos in an easy casserole form.

Whole green chiles give the dish mild heat and Southwestern flavor.

Monterey Jack cheese melts beautifully inside the chiles.

Cheddar cheese creates a rich, golden, cheesy topping.

The egg and milk mixture bakes into a soft, custardy layer.

It is easier than traditional fried chile rellenos.

It uses simple ingredients and comes together quickly.

It is perfect for breakfast, brunch, lunch, or dinner.

It is hearty enough to serve as a main dish.

It pairs well with salsa, beans, rice, tortillas, or salad.

It is great for potlucks and family gatherings.

It tastes warm, cheesy, nostalgic, and deeply comforting.

Key Ingredients

Whole Mild Green Chiles:
Whole green chiles are the heart of this casserole. They bring mild chile flavor, soft texture, and a gentle warmth that balances the richness of the cheese.

Monterey Jack Cheese:
Monterey Jack is placed inside the chiles. It melts smoothly and gives the casserole a creamy, classic chile relleno-style center.

Eggs:
Eggs help hold the casserole together. They create a soft, savory custard that surrounds the stuffed chiles.

Milk:
Milk lightens the egg mixture and helps create a tender, baked texture.

Flour:
Flour gives the egg mixture a little body and helps the casserole set as it bakes.

Salt and Black Pepper:
Salt and pepper season the egg mixture and bring out the flavor of the chiles and cheese.

Mild Cheddar Cheese:
Cheddar cheese is sprinkled over the top. It melts into a golden, rich layer that makes the casserole extra satisfying.

Expert Tips

Drain the canned green chiles well so the casserole does not become watery.

Remove any remaining seeds for a smoother, milder bite.

Slice the Monterey Jack evenly so each chile gets enough cheese.

Arrange the stuffed chiles in a single layer for even baking.

Whisk the eggs, milk, flour, salt, and pepper until smooth.

Pour the egg mixture slowly so it settles around the chiles.

Use freshly grated cheddar for the best melting texture.

Bake uncovered so the top becomes golden and lightly browned.

Let the casserole rest before slicing so it holds together better.

Serve with salsa or green chile sauce for extra flavor.

For more heat, use hot green chiles or add diced jalapeños.

For a richer version, use half-and-half instead of milk.

Chile Relleno Casserole (From Colorado Cache Cookbook)

Ingredients

4 – 7 ounce cans whole, mild green chiles

1 pound Monterey Jack Cheese

5 eggs

1 1/4 cups Milk

1/4 cup Flour

1/2 teaspoon Salt

dash of black pepper

4 cups grated mild Cheddar cheese (1 pound)

Makes 8 servings (Or one full 9×13 casserole dish – plenty for more than 8)

Instructions:

Slit chiles lengthwise on one side.

Remove seeds and drain.

Slice Monterey Jack cheese into 1/4 inch thick slices and place inside chiles.

Place stuffed chiles in an ungreased 3 quart baking dish.

Mix eggs, milk, flour, salt and pepper well, and pour over chiles.

Sprinkle top with grated Cheddar.

Bake uncovered at 350 degrees for 45 minutes.

Important Notes When Making Chile Relleno Casserole (From Colorado Cache Cookbook)

Canned green chiles can hold extra moisture, so draining is important.

Mild green chiles keep the casserole family-friendly.

The casserole will puff slightly while baking and settle as it cools.

The center should be set before removing it from the oven.

If the top browns too quickly, loosely cover it with foil near the end.

Cheese is naturally salty, so avoid adding too much extra salt.

This dish is best served warm after resting for a few minutes.

Leftovers can be refrigerated and reheated gently.

The casserole may become firmer after chilling.

It can be served as a main dish or a side dish.

How to Enjoy Chile Relleno Casserole (From Colorado Cache Cookbook) After Cooking

After the Chile Relleno Casserole comes out of the oven, let it rest for about 10 minutes before slicing. This helps the egg mixture set and allows the melted cheese to settle slightly.

Cut the casserole into squares and serve warm. Each portion should have tender green chiles, melted Monterey Jack inside, a soft egg layer, and golden cheddar on top.

For breakfast or brunch, serve it with scrambled eggs, breakfast potatoes, refried beans, avocado slices, or warm tortillas. It also pairs beautifully with salsa, sour cream, pico de gallo, or green chile sauce.

For lunch or dinner, serve it with Mexican rice, black beans, pinto beans, grilled chicken, carne asada, a simple salad, or roasted vegetables.

A spoonful of salsa over the top adds brightness and acidity, which balances the richness of the cheese. Fresh cilantro, sliced jalapeños, diced tomatoes, or a squeeze of lime can also make the dish feel fresher.

Leftovers can be reheated in the oven or microwave. For the best texture, warm gently until the cheese softens again and the center is hot.

Nutrition Information

Approximate nutrition per serving, based on 8 servings:

Calories: 515 kcal | Total Fat: 38 g | Saturated Fat: 23 g | Monounsaturated Fat: 11 g | Polyunsaturated Fat: 1.5 g | Cholesterol: 205 mg | Sodium: 950–1,450 mg depending on canned chiles and cheese brand | Total Carbohydrates: 10 g | Dietary Fiber: 1.5 g | Sugars: 3 g | Protein: 31 g

Additional estimate:

Calcium: 750–950 mg | Potassium: 250–420 mg | Iron: 1.2–2 mg | Vitamin A: 1,400–2,200 IU | Vitamin C: 25–45 mg

Frequently Asked Questions:

What is Chile Relleno Casserole?
Chile Relleno Casserole is a baked version of chile rellenos made with whole green chiles, cheese, eggs, milk, flour, and cheddar.

What does this casserole taste like?
It tastes cheesy, savory, mild, comforting, and slightly earthy from the green chiles.

Is this dish spicy?
This version is mild because it uses mild green chiles. You can make it spicier by using hot green chiles or adding jalapeños.

What should I serve with Chile Relleno Casserole?
Serve it with salsa, beans, rice, tortillas, sour cream, avocado, salad, or breakfast potatoes.

Is this good for brunch?
Yes. It is excellent for brunch because it is cheesy, filling, easy to slice, and can be served with many breakfast-style sides.

Do I need to fry the chiles first?
No. This casserole skips the frying step and uses canned whole green chiles, making it much easier than traditional chile rellenos.

Why should I drain the chiles well?
Draining prevents extra liquid from making the casserole watery.

Can I use fresh roasted green chiles?
Yes. Fresh roasted, peeled, and seeded green chiles can be used for even better flavor.

How do I know when the casserole is done?
The top should be golden, the cheese should be melted, and the egg mixture should be set in the center.

Can I make this casserole ahead of time?
Yes. You can assemble it ahead, refrigerate it, and bake it when ready. Add a few extra minutes if baking straight from the refrigerator.