Creamy Brie Polenta with Herby Mushrooms

Name: Creamy Brie Polenta with Herby Mushrooms
Ingredients: 1 liter water or stock; 1 cup Polenta; 1 cup Cubed Brie; 500 grams Button Mushrooms; 1/4 cup Butter; 2 tablespoons Butter; 1/4 cup Pecorino Cheese (grated); 1/2 handful Chopped Fresh Parsley; 3 sprigs Thyme; 2 teaspoons Salt; 2 pinches Cracked Pepper; 3 tablespoons Olive Oil; 3 pieces Scallions; 1 handful Cherry tomatoes