Stewy Greek Garbanzos

Name: Stewy Greek Garbanzos
Ingredients: 1 tablespoon Extra Virgin Olive Oil; 3 Garlic Cloves, Crushed, Minced; 1/2 Yellow Onion, Chopped; 15 ounces Can, Garbanzo Beans; 1/2 15-oz Can, Navy Beans; 2 cups Low-Sodium, Chicken Broth (or Vegetable Broth); 1-6oz Can, Tomato Paste; 2 Lemons, fresh squeezed juice; 1 teaspoon Dried Oregano or 1 T fresh, chopped; 1/4 cup Kalamata Olives, quartered; Feta Cheese, crumbled (optional garnish); 1-2 handfuls Spinach, washed