Pioneer Woman Chili Relleno Casserole Recipe: Cheesy Layers with Roasted Pepper Kick

This layered casserole captures the essence of traditional chili relleno with a simpler, crowd-pleasing approach. Roasted poblano peppers bring authentic smoky depth without the fuss of individual stuffing.

With melted cheese between each layer and a golden topping, it bakes into a comforting dish that balances rich flavors with a subtle kick. Perfect for feeding a hungry group.

Ingredients for Pioneer Woman Chili Relleno Casserole

Roasted poblanos, melted cheese, and a handful of pantry staples create this comforting crowd-pleaser.

The peppers are non-negotiable—poblano specifically, not bell. Look for firm, glossy skins at Latin markets or well-stocked grocers. Roasting (directly over a gas flame or under the broiler) chars the skin for easy peeling. For cheese, Monterey Jack provides the melt, while sharp cheddar adds tang. Buy blocks and shred yourself—pre-shredded has anti-caking agents that affect melt.

No poblano access? Hatch chiles (when in season) are the closest swap. For a milder dish, use anaheim peppers. Dairy-free? Pepper Jack-style vegan cheese works, though melt varies by brand. The eggs can be swapped for a cornstarch slurry (2 tbsp cornstarch + 3 tbsp water per egg) for binding, but texture changes slightly. Canned chiles in the Mexican aisle are perfect for the filling.

Assemble and refrigerate overnight for easier slicing. Baked casserole keeps 3-4 days covered in the fridge, reheats beautifully. Freeze portions for up to 2 months—thaw in fridge before reheating to preserve texture.

Step-by-Step Instructions for Chili Relleno Casserole

Master the layering technique that makes this casserole irresistibly rich with every bite.

Step 1: Roast and Prepare the Poblano Peppers

Char the 6 whole Poblano Peppers directly over a gas flame or under a broiler until the skin is blackened all over, turning occasionally. This should take about 10-12 minutes. The peppers should be evenly blistered—this ensures the skin will peel off easily.

Transfer the charred peppers to a bowl and cover with plastic wrap. Let them steam for 15 minutes. Once cool enough to handle, peel off the skin, then make a lengthwise slit to remove the seeds and stems. Pat dry with paper towels to remove excess moisture. This preparation prevents a watery casserole.

Step 2: Create the Egg Batter for Binding

In a blender or with a whisk, combine the 6 whole Large Eggs, 0.5 cup All-Purpose Flour, 1 cup Whole Milk, 1 tsp Kosher Salt, 0.5 tsp Ground Black Pepper, 1 tsp Ground Cumin, and 1 tsp Dried Oregano. Blend until smooth—about 20-30 seconds. The batter should be the consistency of heavy cream.

Let the batter rest for 5 minutes to allow the flour to fully hydrate. This step ensures the mixture coats the peppers evenly and creates a custard-like texture when baked. Stir in the 2 cans Canned Diced Green Chiles, which have been drained, to distribute them throughout the batter.

Step 3: Sauté the Aromatics for Depth

Melt the 4 tbsp Unsalted Butter in a skillet over medium heat. Add the finely diced Yellow Onion and cook for 5-6 minutes until translucent and soft. Stir in the 4 cloves minced Garlic Cloves and cook for an additional 1 minute until fragrant.

This aromatic base adds essential flavor to the casserole. Remove from heat and let cool slightly before mixing into the egg batter. The residual heat will gently temper the eggs, preventing curdling when combined.

Step 4: Layer and Bake the Casserole

Preheat the oven to 375°F. Grease a 9×13-inch baking dish with some of the melted butter. Spread half of the 2 lb Monterey Jack Cheese and half of the 2 lb Cheddar Cheese on the bottom of the dish. Arrange the prepared Poblano Peppers in a single layer over the cheese.

Pour the egg batter evenly over the peppers. Top with the remaining Monterey Jack and Cheddar Cheese. Bake for 35-40 minutes until the top is golden brown and the center is set—insert a knife and it should come out clean. Let rest for 10 minutes before serving to allow the layers to set.

Storing and Reheating This pioneer woman chili relleno casserole

Refrigerator Storage

Let this casserole cool for no more than 2 hours before storing. Transfer to an airtight container or cover the baking dish tightly with plastic wrap. It keeps beautifully in the fridge at 40°F or below for up to 4 days. ❄️

Freezer Storage

For longer storage, wrap individual slices or the whole casserole in heavy-duty aluminum foil and place in a freezer-safe bag. Squeeze out excess air to prevent freezer burn. It freezes well for up to 2 months without losing texture or flavor.

Oven Reheating

Preheat your oven to 350°F and place the casserole in a baking dish. Cover with foil to retain moisture and reheat for 15-20 minutes if refrigerated, or 30-40 minutes if frozen. Remove the foil for the last 5 minutes to crisp the top. 🔥

Microwave Reheating

For a quick meal, microwave individual portions on 70% power for 2-3 minutes, stirring halfway. Add a splash of milk if the texture seems dry. Always ensure it reaches 165°F before serving.

I find the oven method preserves the layered texture best.

Frequently Asked Questions