Recipe of the week: Scalloped Sweet Potatoes

Lasagna. French toast. Roast chicken. Sauteed vegetables. Tuna casserole. Rice pilaf.

No matter who taught you how to cook or when you started to learn, we all have a set of dishes that are our culinary foundation. But just because you have a really great recipe for chicken soup doesn’t mean you know how to make shredded pork tacos, and it might not have occurred to you that the process for making scalloped potatoes is the same for making scalloped sweet potatoes.

These are the kinds of lessons former "Next Food Network Star" contestant Kelsey Nixon shares in her debut cookbook, "Kitchen Confidence: Essential Recipes and Tips That Will Help You Cook Anything" (Clarkson Potter, $19.99), which is inspired by her Cooking Channel show "Kelsey's Essentials." Nixon covers basic cooking techniques, including stir-frying and pan-roasting, and then shares slightly evolved versions of the basic recipe and lots of tips for combining whatever you have in your pantry with these universal cooking methods. The teaching approach will appeal to seasoned and new cooks alike, even if you're well versed in the kitchen.

Scalloped Sweet Potatoes

For an easy twist on the classic potato gratin, I turn to sweet potatoes, which I simmer in cream and broth, top with a little cheese, and bake until bubbling. The earthiness of the sweet potato is the perfect balance for the richness and the nuttiness of the Gruyère cheese. This simple method is a great one to follow when making gratins with different potato varieties, like buttery Yukon Golds.

— Kelsey Nixon

2 Tbsp. unsalted butter

1 large yellow onion, finely chopped

2 garlic cloves, minced

1 1/4 cups heavy cream

1/4 cup low-sodium chicken broth

2 tsp. chopped fresh thyme leaves

1 1/2 tsp. kosher salt

1/2 tsp. cracked black pepper

2 lb. sweet potatoes, peeled and cut into 1/8-inch-thick slices

2 oz. (about 1/2 cup) Gruyère cheese, shredded

Preheat the oven to 375 degrees.

In a cast-iron skillet set over medium-high heat, melt the butter. Add the onion and cook, stirring, until softened and beginning to brown, about 5 minutes. Add the garlic and cook for 1 minute. Stir in the cream, broth, and thyme, and season with the salt and pepper. Add half of the sweet potato slices in a flat layer, then half of the cheese, then the remaining sweet potatoes. Bring to a simmer; do not stir. Reduce the heat to medium-low and cook for 5 minutes longer. Top with the remaining cheese and transfer the skillet to the oven.

Bake until bubbling and the surface begins to brown, about 15 minutes. Let cool for 10 minutes before serving. Serves 6.

— From "Kitchen Confidence: Essential Recipes and Tips That Will Help You Cook Anything" by Kelsey Nixon (Clarkson Potter, $19.99)