Creamy Polenta with Winter Vegetables and Grated Cheese

Ingredients

• 250 g instant polenta
• 1 L hot vegetable stock
• 100 mL heavy cream
• 50 g butter
• 100 g grated cheese (Parmesan or Comté)
• 1 butternut squash
• 2 carrots
• 1 leek
• 100 g button mushrooms
• 2 tablespoons olive oil
• 1 teaspoon dried thyme
• Salt and pepper to taste