Preheat oven to 375° and line a medium cooking sheet with parchment paper. In a large bowl, combine potatoes with butter, garlic and rosemary and season with salt and pepper.
Spread potatoes out in an even layer on a baking sheet. Bake until tender when pricked with a fork, 25-30 minutes. Remove from oven and flatten with the bottom of a drinking glass, or fork. Top with a small slice of brie and return to the oven. Bake until cheese is melted, 10 more minutes.
Garnish with parsley and serve.
Recipe by 5* trending recipes with videos at https://food.theffeed.com/2018/11/20/brie-smashed-potatoes/