I really loved this! It is potato-ey and cheesy, but a little sweet. Don't be shy with brown sugar mixture and with salt. Fontina worked well. Don't overlayer potatoes..only single layer. I used mixture of heavy cream and half and half, and it was fine. Yum!
After reading the only comment, I almost passed this recipe by, but decided to try it for New Year's Eve dinner with 8 guests. I followed the recipe, but added an additional 1/8 teaspoon of nutmeg and 1/4 teaspoon more cinnamon. The flavor was wonderfully rich and nutty and the texture smooth and creamy. The step-by-step is lengthy, but well worth the effort and investment of time. Be careful that the topping doesn't burn during the last 25 minutes of cook time with the foil removed.
Warm and comforting, but lacking in flavor. Loved that the recipe used two types of winter squash.