Spicy Broccoli Rabe and White Bean Soup

Name: Spicy Broccoli Rabe and White Bean Soup
Ingredients: ½ a large onion, diced; Pinch of salt; 2 cloves garlic, grated or minced; ¼ to ½ teaspoon red pepper flakes, depending on how spicy you like it; 2 cans white beans, rinsed & drained {I used Great Northern Beans}; 3 cups low sodium chicken broth; ½ of a medium yellow squash, chopped {or 1 small one}; ½ of a medium zucchini, chopped {or 1 small one}; ½ of a large bunch broccoli rabe, tough stems removed, chopped {probably about 3-4 cups worth}