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Chili Relleno Casserole

Posted on June 22, 2026.

A freshly baked chili relleno casserole served in a glass dish.

This post contains affiliate links. As an Amazon Associate, I earn from qualifying purchases. This comes at no extra cost to you.

This Chili Relleno Casserole combines the smoky essence of roasted poblano peppers with melted layers of cheddar and Monterey Jack cheese, creating a luscious and hearty dish. With its rich egg mixture binding the flavors together, it offers the perfect balance of creaminess and spice. Quick to assemble and bake, this recipe is ideal for busy evenings or when you’re craving bold, Mexican-inspired flavors.

Table of Contents

Why This Chili Relleno Casserole Will Save Your Weeknights

  • This casserole is ready in under an hour, making it a lifesaver when you need a home-cooked meal quickly. Its simple layering technique eliminates the hassle of stuffing individual peppers.
  • The dish uses everyday ingredients like eggs, cheese, and poblano peppers, ensuring accessibility without compromising on bold flavors. It’s a great way to use up pantry staples like flour and spices.

Everything You Need for Chili Relleno Casserole

Roasted poblano peppers serve as the foundation of this dish, lending their smoky, slightly spicy flavor. Combined with the cheeses, they create a decadent and gooey texture that sets the casserole apart.

How To Make Chili Relleno Casserole Step by Step

    1. Preheat the oven to 375°F (190°C). Grease a 9×13-inch baking dish thoroughly with cooking spray or butter to prevent sticking.
    2. Roast the poblano peppers over an open flame or under your oven’s broiler until their skins are charred black. Place them into a sealed plastic bag or cover them with a towel for 10 minutes to steam, then peel off the skins and remove seeds and stems.
    3. Layer half of the peeled poblano peppers into the bottom of the prepared baking dish. Press them down slightly to cover the base evenly.
A freshly baked chili relleno casserole served in a glass dish.
Chili Relleno Casserole 11

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  1. Sprinkle half of the shredded Monterey Jack cheese and half of the shredded cheddar cheese over the peppers, creating the first cheese layer.
  2. Add the remaining poblano peppers over the cheese layer, followed by the rest of the shredded cheeses to create a stacked effect.
  3. In a large mixing bowl, whisk together the eggs, flour, baking powder, garlic powder, cumin, salt, and black pepper until smooth. Gradually incorporate the milk while whisking to create a uniform mixture.
  4. Pour the egg-milk mixture evenly over the layers in the baking dish, ensuring everything is coated and bound together.
  5. Bake for 30-35 minutes, or until the top is golden and the egg mixture is fully set. Check by inserting a knife or toothpick—it should come out clean.
  6. Let the casserole cool for 5 minutes to firm up before slicing into squares for serving.
  7. Serve warm, optionally topped with tomato salsa to enhance the smoky and cheesy flavors.

Meal Prep, Storage, and Reheating Tips

To store leftovers, cover the casserole tightly with foil or transfer portions into airtight containers. It keeps well in the refrigerator for up to 4 days.

For longer storage, freeze individual servings wrapped securely in plastic wrap and foil for up to 2 months. Reheat refrigerated portions in the oven at 350°F (175°C) or microwave in 30-second intervals until warmed through.

You might also enjoy our french onion chicken orzo casserole.

For frozen servings, thaw in the refrigerator overnight, then heat using the same methods for optimal texture and flavor.

Looking for something similar? Try our best ever chicken and rice casserole.

For more ideas, check out our easy chicken burrito casserole recipe.

Common Mistakes to Avoid

  • Failing to roast and peel the poblanos properly can result in a tough texture and a bitter taste. Ensure you thoroughly char the skins and steam the peppers before peeling.
  • Overbaking the casserole can lead to a dry and rubbery texture. Stick to the recommended 30-35 minute baking time and check for doneness early.
  • Skipping the baking powder in the egg mixture may result in a dense casserole. The baking powder adds a light, fluffy quality that complements the heartiness of the other ingredients.

Easy Ingredient Swaps and Substitutions

  • If poblano peppers are unavailable, you can substitute roasted hatch chilies for a similarly smoky and slightly spicier flavor profile. Adjust the spice levels by removing or retaining seeds based on your preference.
  • For a vegetarian twist, swap the cheeses for plant-based alternatives and amplify the flavor with additional spices like smoked paprika. This maintains the rich layers while accommodating dietary needs.
  • Whole milk can be replaced with almond milk or oat milk for a dairy-free option, though the consistency may be slightly thinner. Use this swap only if cheese alternatives are used.

Frequently Asked Questions

  • Can I use canned chilies instead of fresh poblano peppers? Yes, but fresh roasted poblanos deliver a smokier and more authentic taste. Drain the canned chilies well to avoid excess moisture in the dish.
  • Is this casserole keto-friendly? While it contains some flour, you can substitute almond flour to lower the carb count, making it more keto-compatible.
  • Can I add meat to this recipe? Absolutely! Cooked shredded chicken or crumbled chorizo can be layered alongside the cheese for added protein and flavor.
A freshly baked chili relleno casserole served in a glass dish.

Chili Relleno Casserole

A delicious and easy-to-make casserole featuring roasted poblano peppers, cheese, and a flavorful egg mixture.
Prep Time 20 minutes
Cook Time 35 minutes
Total Time 55 minutes
Servings: 6 servings
Course: Main Course
Cuisine: Mexican
Calories: 320

Ingredients
  

Method
 

  1. Preheat the oven to 375°F (190°C). Grease a 9x13-inch baking dish with cooking spray or butter.
  2. Roast the poblano peppers over an open flame or under a broiler until the skins are charred. Place them in a sealed plastic bag or cover with a towel for 10 minutes to steam, then peel off the skins. Remove the seeds and stems.
  3. Layer half of the peeled poblano peppers in the bottom of the baking dish.
  4. Sprinkle half of the shredded Monterey Jack cheese and half of the shredded cheddar cheese evenly over the peppers.
  5. Add the remaining poblano peppers on top of the cheese layer, followed by the rest of the shredded cheeses.
  6. In a mixing bowl, whisk together the eggs, flour, baking powder, garlic powder, cumin, salt, and black pepper until smooth. Gradually whisk in the milk until fully combined.
  7. Pour the egg mixture evenly over the peppers and cheese in the baking dish.
  8. Bake the casserole in the preheated oven for 30-35 minutes, or until the top is golden and the egg mixture is set.
  9. Remove the casserole from the oven and let it cool for 5 minutes before slicing into squares.
  10. Serve warm, optionally topped with tomato salsa for added flavor.

Notes

You can substitute Anaheim peppers for poblano peppers if desired. Adjust the spice level by using mild or spicy salsa.
A freshly baked chili relleno casserole served in a glass dish.
Chili Relleno Casserole 12

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Dominique

Hi there, I’m chef living in New York City. Every morning, I wake up to the sounds of my little one’s laughter and the comforting routine of preparing breakfast for my family my husband, our child, and my beloved mother, who’s become both my rock and my inspiration since my father passed away. As the only daughter left in our family, I feel a deep responsibility to carry on his memory whenever I step into the kitchen.

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