Quinoa Vegetable Medley
1 (15 ounce) can garbanzo beans, drained and … 1 cup baby spinach leaves 1 cup mushrooms, sliced 1 cup quinoa, rinsed 1 small zucchini, chopped 1 sweet onion (such as Vidalia®), chopped 1 tablespoon olive oil, or more if needed 1 teaspoon ground black pepper 1 ¼ cups vegetable broth 2 stalks celery, chopped 3 cloves garlic, minced, or to taste ½ teaspoon sea salt