Gnocchi in Tomato Cream sauce.

2 lbs home-made or bought gnocchi 1 small onion 1 carrot 1 celery rib 2 3/4 lbs canned, peeled tomatoes 1 1/2 ounces butter salt and pepper 8 ounces cream 1[...]

1/2 ounce butter 1 garlic clove , crushed 1 chili flakes (optional) 3/4 cup vegetable stock 4 tablespoons heavy cream 2 ounces parmesan cheese , finely grated[...]