Step 1

Preheat oven to 350 degrees. Butter or grease a 1-quart oval baking dish or equivilant size.

Step 2

In a medium saucepan, melt butter over a medium heat. Add garlic. Cook 1-2 minutes until soft and fragrant. Whisk in flour. Slowly whisk in warm milk and salt. Bring the mixture to a boil and reduce to a simmer. Simmer until thickened, about 3-4 minutes. Season with salt and pepper to taste.

Step 3

Whisk in pumpkin puree. Season to taste with salt and pepper.

Step 4

Layer half of the potatoes into the bottom of the prepared baking dish. Sprinkle with salt and pepper. Spread half of the sauce on top. Sprinkle half of the cheese on top. Layer remaining potatoes on top of the first layer. Repeat process.

Step 5

Spray aluminum foil with baking spray, cover the baking dish and bake until potatoe are fork-tender. In the last few mintues of cooking, turn the heat on to broil. Cook until the cheese is bubbly and golden brown. Cool for a few minutes before serving.