Serves 4 Ingredients: Polenta: 1 cup polenta 4 cups water 3 Tbsp butter (plus extra for frying polenta) 50g Parmesan cheese, finely grated Salt to taste Spinach: 400g fresh spinach, thinly shredded 2 cloves garlic, minced 2 Tbsp butter Mushrooms: 1 Tbsp olive oil 1 Tbsp butter 500g portabellini mushrooms, sliced 1 shallot, finely minced …