New Mexican Potatoes Au Gratin Recipe

Spice up your dinner routine with this creamy, dreamy New Mexican twist on classic potatoes au gratin! This recipe features layers of thinly sliced potatoes smothered in a spicy, cheesy sauce made with roasted chilies and a hint of New Mexican flair. Get ready for a comforting and flavorful dish that's perfect for a weeknight meal or a special occasion.

Prep Time 20 mins

Cook Time 80 mins

Calories 567.9 kcal

Protein 41g

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The Forktionary Kitchen Team

Adapted from Food.com, then tested & standardized by Forktionary.

Ingredients for New Mexican Potatoes Au Gratin

2 pounds (900g) russet potatoes
1/4 cup (30g) all-purpose flour
1/4 cup (57g) butter
1 teaspoon salt
1/2 teaspoon black pepper
1 cup (240ml) sour cream
Green Chilies
Monterey Jack Cheese

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How to Make New Mexican Potatoes Au Gratin

Preheat oven to 350°F (175°C).
Melt 1/4 cup (57g) butter in a medium saucepan over medium-high heat.
Whisk in 1/4 cup (30g) all-purpose flour and cook, stirring constantly, until the mixture is smooth and lightly browned (about 2-3 minutes). This creates a roux.
Gradually whisk in 1 cup (240ml) sour cream, 1 (4 ounce) can of diced green chilies (drained), 1 teaspoon salt, and 1/2 teaspoon black pepper. Continue to cook and stir until the sauce has thickened to the consistency of gravy (about 2-3 minutes).
Remove from heat and stir in 1 1/2 cups (150g) shredded Monterey Jack cheese and 1/2 cup (60g) shredded cheddar cheese. Set aside.
Thinly slice 2 pounds (900g) russet potatoes, leaving the skins on.
Lightly butter a small (approximately 1.5 quart) casserole dish.
Layer half of the sliced potatoes in the prepared casserole dish. Pour half of the cheese sauce over the potatoes.
Repeat layers with remaining potatoes and cheese sauce.
Sprinkle the remaining 1/2 cup (60g) shredded Monterey Jack cheese and 1/4 cup (30g) shredded cheddar cheese over the top.
Bake for 45-60 minutes, or until the potatoes are tender and the cheese is melted and bubbly.
Let stand for 10 minutes before serving.

Nutrition Information (Approximate per serving)

Sodium

29 g

Sugar

10g

Fat

134g

Carbs

Recipe Categories (Choose a category and find related recipes!)

Main Courses Main Dish / Dinner Sweets & Sides Side Dishes The Americas American Mexican Vegetarian Gluten Free Fall Recipes Baking

Recipe Tags (Choose a tag and find related recipes!)

Time To Make Course Main Ingredient Preparation Occasion Side Dishes Potatoes Vegetables Dietary Spicy Taste Mood 4 Hours Or Less

Frequently Asked Questions

How long does it take to make New Mexican Potatoes Au Gratin?

New Mexican Potatoes Au Gratin takes about 100 minutes from start to finish — roughly 20 minutes to prepare and 80 minutes to cook.

How many calories are in New Mexican Potatoes Au Gratin?

New Mexican Potatoes Au Gratin has approximately 567.9 calories per serving, with about 41 g protein, 9 g carbohydrates and 66 g fat.

What ingredients do I need for New Mexican Potatoes Au Gratin?

The key ingredients for New Mexican Potatoes Au Gratin are Potatoes, Flour, Butter, Salt, Pepper, Sour Cream. See the full list with measurements above.