Poblano Casserole (Chile Relleno Casserole): A Flavorful Mexican Classic

Introduction

Did you know that chile rellenos are one of the most beloved Mexican dishes, traditionally stuffed and fried, but can also be transformed into a simple, baked casserole? The Poblano Casserole (Chile Relleno Casserole) captures the smoky flavor of roasted poblano peppers, combined with melty cheese, zesty tomato sauce, and savory fillings—all in an easy, oven-baked dish.

This recipe is perfect for family dinners, potlucks, or weeknight meals, offering all the rich flavors of traditional chiles rellenos without the hassle of frying.

NLP & Semantic Keywords: chile relleno casserole, baked poblano peppers, Mexican cheese casserole, easy Mexican dinner, roasted pepper casserole, cheesy stuffed pepper bake.

Ingredients List

For the Casserole

4–5 large poblano peppers, roasted, peeled, and seeded
2 cups cooked shredded chicken (or skip for vegetarian option)
1 ½ cups shredded Monterey Jack or Oaxaca cheese
1 cup shredded cheddar cheese
1 small onion, diced
2 cloves garlic, minced
1 cup tomato sauce or enchilada sauce
¼ cup chopped cilantro
1 tsp cumin
1 tsp chili powder
Salt and pepper, to taste
1 tbsp olive oil

Optional Toppings

Sliced black olives
Sour cream or Mexican crema
Extra cilantro for garnish
Sliced avocado

Ingredient Tip: Roasting poblano peppers over an open flame or under a broiler enhances their smoky, sweet flavor, which is key to an authentic taste.

Timing

Stage	Time
Roasting Poblanos	10 minutes
Filling Preparation	10 minutes
Baking	20–25 minutes
Total Time	~40–45 minutes

Pro Tip: Pre-roasted peppers can be prepared ahead of time to save prep time.

Step-by-Step Instructions

Step 1: Preheat Oven

Preheat oven to 375°F (190°C).
Lightly grease a 9×13-inch baking dish.

Step 2: Roast and Prepare Poblanos

Roast peppers until skins are charred and blistered.
Place in a covered bowl to steam for 5 minutes.
Peel skins, remove seeds, and set aside.

Step 3: Prepare Filling

In a skillet, heat olive oil over medium heat.
Sauté onions and garlic until fragrant.
Add shredded chicken, cumin, chili powder, salt, and pepper. Cook 3–4 minutes.
Stir in ½ cup of cheese to bind filling.

Step 4: Assemble the Casserole

Slice poblanos into strips or halves.
Layer peppers in the baking dish, then spread chicken filling on top.
Pour tomato sauce over the peppers.
Sprinkle remaining cheese evenly over the top.

Step 5: Bake

Cover loosely with foil and bake for 15 minutes.
Remove foil and bake an additional 5–10 minutes until cheese is melted and bubbly.

Step 6: Serve

Garnish with cilantro, sour cream, avocado, or olives.
Serve with warm tortillas, Mexican rice, or a fresh salad.

Nutritional Information

Approximate values per serving (serves 4):

Nutrient	Amount
Calories	360 kcal
Protein	22 g
Carbohydrates	12 g
Fat	25 g
Fiber	4 g

Nutrition Insight: This dish is high in protein and healthy fats, with fiber from poblano peppers, making it satisfying yet lighter than traditional fried chile rellenos.

Healthier Alternatives for the Recipe

Use low-fat cheese or reduce cheese to lower calories.
Swap shredded chicken with black beans or lentils for a vegetarian version.
Use homemade tomato sauce to reduce sodium.
Add extra vegetables like zucchini or corn for more fiber and vitamins.

Serving Suggestions

Serve with Mexican rice, beans, or a fresh corn salad.
Garnish with sliced avocado, pickled jalapeños, or fresh cilantro for extra flavor.
Ideal for family dinners, meal prep, or festive occasions.

Common Mistakes to Avoid

Skipping roasting: Poblanos need to be charred for that signature smoky flavor.
Overfilling: Can cause the casserole to become too wet.
Using wet cheese: Drains excess moisture to avoid soggy layers.
Not seasoning properly: The chicken or filling must be flavorful to balance the peppers.

Storing Tips for the Recipe

Store leftovers in an airtight container in the fridge for 2–3 days.
Reheat in the oven at 325°F (160°C) to maintain texture.
Freezing is possible but may slightly alter the texture of roasted peppers.