Name: Easy Chili Relleno Casserole (Cheesy, Cozy & So Delicious!) Recipe
Prep time: 10 min
Cook time: 50 min
Total time: 1 h
Cuisine: Mexican-American
Ingredients: 1 (27-ounce) can whole green chilis; ½ pound cheddar cheese, grated; ¼ pound pepper jack cheese, grated; 1½ cups milk; 6 large eggs; ½ cup all-purpose flour; 1 teaspoon coarse kosher salt; ½ teaspoon smoked paprika; ½ teaspoon black pepper

If you’re craving a dish that’s packed with cheesy goodness, bursting with cozy warmth, and incredibly easy to whip up, then this Easy Chili Relleno Casserole (Cheesy, Cozy & So Delicious!) Recipe is just what you need! It takes the classic chile relleno flavors and transforms them into a fuss-free, family-friendly casserole that’s perfect for any night of the week.

Why You Should Make This Recipe

Comfort Food at Its Best: This casserole is like a warm hug on a plate, combining gooey cheese with mild, smoky green chilies.
Incredibly Easy to Prepare: With just a handful of ingredients and simple steps, you’ll have dinner ready in no time.
Layered Flavors Without the Work: No need to stuff chilies by hand – layering does all the magic for you.
Perfect for Busy Weeknights or Casual Gatherings: It’s hearty enough to satisfy hungry appetites and versatile enough for leftovers.

The image shows a white square baking dish filled with a cheesy casserole with a golden brown top layer of melted cheese that looks bubbly and slightly crispy at the edges. Below the cheese, large green chili pieces are visible, spread evenly throughout the dish. The surface of the casserole has a smooth texture with cheese melted smoothly over the chili pieces. The dish is placed on a white marbled surface with a light grey cloth on the side and two white plates with speckled brown edges in the background. A fork and knife rest beside the dish on the marbled surface. Photo taken with an iphone --ar 2:3 --v 7 - Easy Chili Relleno Casserole, cheesy chili casserole, green chili casserole, family-friendly dinner, simple Mexican casserole

Ingredients & Substitutions

The beauty of this Easy Chili Relleno Casserole (Cheesy, Cozy & So Delicious!) Recipe lies in its straightforward ingredients that come together to create such a dreamy dish. Each ingredient plays a special role—from the creamy milk in the batter to the bold cheddar and spicy pepper jack cheeses that add layers of flavor and texture.

Flat lay of whole green chilis split lengthwise, piles of grated sharp cheddar cheese and creamy pepper jack cheese, fresh whole large eggs, a small glass of milk, a mound of all-purpose flour, scattered coarse kosher salt crystals, and a sprinkle of smoked paprika and black pepper specks, all beautifully arranged with natural light highlighting their colors and textures, placed on a white marble surface, photo taken with an iphone --ar 2:3 --v 7 - Easy Chili Relleno Casserole, cheesy chili casserole, green chili casserole, family-friendly dinner, simple Mexican casserole

Whole Green Chilis: Whether you find mild or medium heat, these bring authentic flavor and tender texture without extra fuss.
Milk: Combines with eggs and flour to create a smooth, custard-like batter that sets beautifully.
Eggs: Essential for binding the casserole together and adding that rich, satisfying mouthfeel.

All-Purpose Flour: Helps thicken the batter just enough to hold everything in place.
Cheddar Cheese: Adds a sharp, creamy dimension that pairs perfectly with the chilies.
Pepper Jack Cheese: Brings a subtle kick and wonderful meltiness to the dish.

Smoked Paprika, Kosher Salt & Black Pepper: These simple seasonings elevate the casserole with a gentle smoky warmth and balanced savoriness.

Note: You’ll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

How to Make Easy Chili Relleno Casserole (Cheesy, Cozy & So Delicious!) Recipe

Step 1: Prepare the Chili Layers

Start by preheating your oven to 375°F—this ensures the casserole will cook evenly and develop that gorgeous golden top. Then, split the whole green chilis lengthwise. Don’t worry about rinsing or removing seeds; their mild heat and texture add just the right touch. Place half of these chilies in a 9×13-inch baking dish and sprinkle with half of the shredded cheeses, creating a flavorful base layer.

Step 2: Layer and Pour the Batter

Repeat the chili and cheese layer once more, giving the casserole a rich, melty filling. Next, combine the milk, eggs, flour, salt, smoked paprika, and black pepper in a blender until silky smooth—this batter will become your luscious custard topping. Pour it gently over the layered chilies and cheese, making sure every nook is covered to lock in all those delicious flavors.

Step 3: Bake to Perfection

Pop your casserole into the oven and let it bake for 40-50 minutes. You’ll know it’s ready when it’s set and the top shines with a golden brown hue. This is where the magic happens—the cheeses melt, the batter firms up, and the chilies deepen in flavor, forming a truly irresistible dish. Once done, let it cool slightly before slicing and serving.

How to Serve Easy Chili Relleno Casserole (Cheesy, Cozy & So Delicious!) Recipe

A slice of baked layered dish on a white plate with rustic brown speckles and a wavy edge, showing three thick layers of soft green sauce and light cream-colored filling, topped with melted golden yellow cheese and small bits of green cilantro leaves scattered on top, with a white baking dish filled with more of the dish blurred in the background, all set on a white marbled surface photo taken with an iphone --ar 2:3 --v 7 - Easy Chili Relleno Casserole, cheesy chili casserole, green chili casserole, family-friendly dinner, simple Mexican casserole

Garnishes

Fresh garnishes can take this casserole over the top! Try sprinkling chopped cilantro or green onions for a fresh, vibrant contrast. A dollop of sour cream or crema adds a cooling touch that balances the rich cheeses and smoky spices perfectly.

Side Dishes

This casserole pairs beautifully with simple sides like Mexican rice or a fresh garden salad. If you want to amp up the comfort factor, serve it alongside refried beans or warm tortillas to scoop up every last cheesy bite.

Creative Ways to Present

For a fun twist, serve this Easy Chili Relleno Casserole in individual ramekins for a personalized touch at dinner parties. You can also layer it with avocado slices or sprinkle with toasted pepitas to add texture and color that will wow your guests.

Make Ahead and Storage

Storing Leftovers

Once the casserole has cooled, store leftovers in an airtight container in the fridge for up to 4 days. It stays flavorful and melts back into cheesy perfection easily, making it a great option for quick lunches or dinners throughout the week.

Freezing

This recipe also freezes wonderfully! For best results, freeze the casserole before baking. When you’re ready to enjoy it, simply thaw, bake, and allow the cheese to melt fresh, preserving that unbeatable texture and flavor.

Reheating

Reheat slices gently in the microwave or ovenTo keep that melty cheese vibe, cover with foil and warm in a 350°F oven for 15-20 minutes until heated through.

FAQs

Can I use canned diced green chilies instead of whole?

Yes! While whole green chilis offer a chunkier texture and more presence in each bite, diced chilies can be used in a pinch. Just be mindful that the texture will be slightly different and you might want to adjust the layering accordingly.

Can I make this casserole vegetarian?

This Easy Chili Relleno Casserole is naturally vegetarian-friendly as it focuses on cheese and chilies—just be sure your cheeses don’t contain animal rennet if you seek a strict vegetarian dish.
What’s the best cheese blend to use?

The combination of sharp cheddar and pepper jack is ideal for that balance of creamy richness and gentle heat, but feel free to experiment with Monterey Jack or even a mild mozzarella for a different twist.
Can I prepare this casserole ahead of time?

Definitely! You can assemble the casserole the night before, cover it tightly, and refrigerate. Just add a few extra minutes to the baking time when you’re ready to cook it to ensure it’s heated through and bubbly.

Final Thoughts

Once you make this Easy Chili Relleno Casserole (Cheesy, Cozy & So Delicious!) Recipe, it’ll become a go-to comfort food favorite in your home. It’s simple, fulfilling, and brings all those beloved Mexican-inspired flavors together with such ease—it’s a total crowd-pleaser you’ll want to make again and again!

Easy Chili Relleno Casserole (Cheesy, Cozy & So Delicious!) Recipe