Braised Lamb without nuts pulp garlic

1 lb penne pasta (can use more less, as desired) 1/3 cup oil (or more or less as needed) 6 -8 lamb shanks 2 onions , chopped 1 1/2 lbs small button mushrooms[...]

3 -4 tablespoons olive oil 6 lamb shanks 2 large onions , chopped 2 -3 tablespoons chopped fresh garlic (or to taste) 1 1/2 lbs small white button mushrooms 1[...]