Summer Squash & Sausage Stew

Ingredients:

2 tsp olive oil
1 pound Andouille sausage, or other spicy, smoked sausage
1 large onion, diced
3 cloves minced garlic
1 cup crushed tomatoes
3 cups chicken broth, or as needed
2 pounds summer squash, cut in 1-inch pieces
1 1/2 pounds Yukon gold potatoes, cut in 2-inch chunks
1/2 cup diced green pepper
1 tsp salt, plus more to taste
freshly ground black pepper and cayenne to taste
1/4 cup chopped Italian parsley
grated parmesan cheese, optional