Hearty Swiss Potato Casserole

Serve up this hearty Swiss cheese potato casserole: thinly sliced potatoes draped in creamy gravy, Gruyere, garlic, scallions, and rosemary.

• Preparation Time: 15 mins
• Cooking Time: 1 hr 1 mins
• Total Time: 1 hr 16 mins
• Calories: 419 Calories

Ingredients

• 1 clove garlic, minced
• 1 pinch salt and ground black pepper to taste
• 3 medium potatoes, peeled and thinly sliced
• 2 scallions, finely chopped
• 0.25 cup butter
• 0.5 teaspoon dried rosemary
• 1.5 teaspoons cornstarch
• 0.5 teaspoon ground thyme
• 0.25 cup whole wheat flour
• 1.6666667461395 cups water, divided
• 0.75 cup shredded Swiss cheese
• 0.75 cup shredded Swiss Gruyere cheese

Recipe Instructions

Step 1

Preheat the oven to 375 degrees F (190 degrees C).

Step 2

Melt butter in a saucepan over medium-low heat. Let simmer for 1 minute. Add flour, 1 tablespoon at a time, whisking constantly until completely incorporated, 5 to 8 minutes. Add 1 cup water slowly and whisking constantly to avoid clumping. Remove from heat.

Step 3

Whisk remaining 2/3 cup water together with cornstarch in a small bowl. Add slurry to the gravy; whisk to combine.

Step 4

Stir the gravy briefly; season with salt and pepper. Add thyme and rosemary. Stir in Swiss cheese and Gruyere cheese. Add potatoes, scallions, and garlic; stir well until potato slices are separated and coated with gravy. Pour mixture into an 8-inch square baking dish.

Step 5

Bake in the preheated oven until potatoes are tender, 40 to 50 minutes.