½ pound rigatoni pasta
2 tablespoons olive oil
4 large garlic cloves, minced
½ red onion, thinly sliced
2 cups shiitake mushrooms, stems removed and thinly sliced
2 medium summer squash, halved and thinly sliced
½ teaspoon red pepper flakes, or to taste
2 tablespoons to ¼ cup half and half
1 cup Marzinera or Roma tomatoes, diced
Salt and freshly ground black pepper, to taste
Parmesan or pecorino cheese, grated for topping