Mince garlic clove and chop enough onion for 1 cup.
In a medium mixing bowl stir together flour, cornmeal, baking powder, and 1/4 teaspoon salt and set aside.
In a small bowl combine egg white, milk, and oil, set aside.
In a 10-inch skillet combine the water, onion, and garlic. Bring to boiling and reduce heat. Cover and simmer 5 minutes or until tender.
Stir in garbanzo beans (chickpeas), kidney beans, 15 ounce can tomato sauce, 4 ounce can green chili peppers, chili powder, and 1/4 teaspoon salt.
In a small bowl stir together 1 1/2 teaspoon cornstarch and 1 tablespoon water. Stir into bean mixture. Cook and stir till slightly thickened and bubbly. Reduce heat.
For dumplings, add milk mixture to cornmeal mixture; stir just till combined. Drop dumpling mixture from a tablespoon to make 4-5 mounds atop the hot bean mixture.
Cover and simmer for 10-12 minutes or till a toothpick inserted into the center of a dumpling comes out clean.