Chile Relleno Casserole Recipe
Introduction
Chile Relleno Casserole is a delicious twist on the classic Mexican stuffed pepper. This layered casserole combines roasted poblano peppers with melted cheeses and a fluffy savory egg custard, creating a comforting and flavorful meal perfect for any occasion.

Ingredients
- 6-8 large poblano peppers (see note)
- 2 cups freshly shredded Monterey Jack cheese, divided
- 1 cup freshly shredded cheddar cheese, divided
- 5 large eggs
- 1 1/2 cups whole milk
- 3 tablespoons all-purpose flour
- 1 teaspoon baking powder
- 1/4 teaspoon onion powder
- 1/4 teaspoon garlic powder
- 1/4 teaspoon salt
- 1/4 teaspoon black pepper
- Sour cream, salsa, and fresh chopped cilantro for serving (optional but recommended)
Instructions
- Step 1: Preheat the oven’s broiler and position the rack about 6 inches from the heat source. Line a baking sheet with aluminum foil. Place the poblano peppers on the sheet and roast for 10-15 minutes, turning occasionally with tongs until the skins are blackened and charred.
- Step 2: Transfer the roasted peppers to a plastic bag and let them steam for 10 minutes as they cool. Once cool enough to handle, peel off the skins, cut off the stems, open them, and remove the seeds.
- Step 3: Preheat the oven to 350°F (175°C). Lightly coat a 3-quart baking dish with nonstick spray.
- Step 4: Arrange half of the roasted peppers in a single layer in the baking dish. Sprinkle 1 cup Monterey Jack and 1/2 cup cheddar cheese evenly over the peppers. Repeat layers with remaining peppers and cheeses.
- Step 5: In a medium bowl, whisk together the eggs, milk, flour, baking powder, onion powder, garlic powder, salt, and black pepper until smooth and well combined.
- Step 6: Pour the egg mixture evenly over the layered peppers and cheese.
- Step 7: Bake for 45 minutes, or until the center is puffed and the eggs are set with golden edges.
- Step 8: Let the casserole cool for 5-10 minutes before slicing into squares. Serve with sour cream, salsa, and chopped cilantro if desired.
Tips & Variations
- To make peeling easier, use gloves when handling hot peppers and be patient while steaming in the bag.
- Substitute green bell peppers for a milder flavor if preferred.
- Add cooked chorizo or ground meat between layers for a heartier dish.
- Use a blend of cheeses like Oaxaca or queso fresco for authentic flavor variations.
Storage
Store any leftovers covered in the refrigerator for up to 3 days. Reheat individual portions in the microwave or in a 350°F oven until warmed through. This casserole does not freeze well due to the egg custard texture.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use canned or jarred roasted peppers instead of fresh poblanos?
While fresh roasted poblanos offer the best flavor and texture, you can use jarred roasted peppers in a pinch. Be sure to drain them well and pat dry to reduce excess moisture.
Is this casserole spicy?
Poblano peppers have mild to medium heat, and roasting them softens their spiciness. If you prefer less heat, choose milder peppers or remove all seeds, which contain most of the capsaicin.
PrintChile Relleno Casserole Recipe
This Chile Relleno Casserole transforms classic stuffed poblano peppers into a comforting, cheesy baked dish. Roasted poblano peppers are layered with shredded Monterey Jack and cheddar cheeses, then enveloped in a seasoned egg and milk mixture before baking to golden perfection. Served with sour cream, salsa, and fresh cilantro, this casserole offers a delicious, easy-to-make meal that captures the bold flavors of traditional Mexican chile rellenos in a convenient casserole form.
- Prep Time: 25 minutes
- Cook Time: 50 minutes
- Total Time: 1 hour 15 minutes
- Yield: 6 servings 1x
- Category: Main Dish
- Method: Baking
- Cuisine: Mexican
- Diet: Gluten Free
Ingredients
Peppers
- 6–8 large poblano peppers
Cheese
- 2 cups freshly shredded Monterey Jack cheese, divided
- 1 cup freshly shredded cheddar cheese, divided
Egg Mixture
- 5 large eggs
- 1 1/2 cups whole milk
- 3 tablespoons all-purpose flour
- 1 teaspoon baking powder
- 1/4 teaspoon onion powder
- 1/4 teaspoon garlic powder
- 1/4 teaspoon salt
- 1/4 teaspoon black pepper
Optional Toppings
- Sour cream, for serving
- Salsa, for serving
- Fresh chopped cilantro, for garnish
Instructions
- Roast the Peppers: Preheat your oven’s broiler and adjust the rack to about 6 inches from the heat source. Line a baking sheet with aluminum foil. Place the poblano peppers on the baking sheet and roast them for 10-15 minutes, turning occasionally with tongs, until the skins are blackened and charred.
- Steam and Peel: Transfer the hot roasted peppers into a plastic bag and seal it to allow them to steam for 10 minutes. This softens the skins for easy peeling. Once cool enough to handle, peel off the skins, cut off the stems, slit open the peppers and remove all seeds.
- Prepare Baking Dish and Layer: Preheat the oven to 350°F (175°C). Lightly coat a 3-quart baking dish with nonstick spray. Arrange half of the roasted peppers in a single layer on the dish, then sprinkle half of the Monterey Jack and half of the cheddar cheese evenly over them. Repeat with remaining peppers and cheeses to create two layers.
- Mix Egg Batter: In a medium bowl, whisk together eggs, whole milk, all-purpose flour, baking powder, onion powder, garlic powder, salt, and black pepper until smooth with no lumps.
- Pour and Bake: Evenly pour the egg mixture over the layered peppers and cheeses in the baking dish. Place the dish in the preheated oven and bake for 45 minutes, until the casserole is puffed in the center, eggs are set, and edges are golden brown.
- Cool and Serve: Let the casserole stand and cool for 5-10 minutes to set firmly. Cut into squares and serve with dollops of sour cream, a spoonful of salsa, and a sprinkle of freshly chopped cilantro for best flavor and presentation.
Notes
- Use large poblano peppers for best results, as they provide a hearty filling and mild heat.
- If you prefer a spicier casserole, leave some seeds in or substitute some poblanos with hotter peppers like jalapeños.
- For easier peeling of peppers, cover them immediately after roasting to steam thoroughly.
- Ensure the flour is fully incorporated in the egg mixture to avoid lumps in the bake.
- This casserole can be prepared a day ahead and reheated gently before serving.
Keywords: Chile Relleno Casserole, baked poblano peppers, Mexican casserole, cheesy casserole, easy dinner recipe, stuffed pepper casserole

