Start by putting your cherry tomatoes into a pan with the whole head of garlic – chop the head of the garlic so it can roast better. Add olive oil and put the pan into the oven for about 30 minutes at 180 degrees.
Take the tray out the oven and remove the stems of the tomatoes. Fork mash them and squeeze the garlic out so all the puree mixes with the tomato sauce.
Mix the mascarpone, gruyère, and mozzarella cheese together only keeping a handful of mozzarella aside to add to the top of the dish with the parmesan.
Add the salt, black pepper and 1 teaspoon of sage and mix altogether with 1 cup of water.
Lastly, add the spinach and ricotta tortellini and give it a good mix so that they are covered in the sauce.
Grate the rest of the mozzarella, add it to the top with the parmesan cheese and sprinkle the last teaspoon of sage.
Bake in the oven for 30 minutes until the tortellini pasta is baked.
Garnish with fresh parsley or basil and enjoy