Meatball Chili with Dumplings

Name: Meatball Chili with Dumplings
Ingredients: 1 large egg, beaten; 3/4 cup finely chopped onion, divided; 1/4 cup dry bread crumbs or rolled oats; 5 teaspoons beef bouillon granules, divided; 3 teaspoons chili powder, divided; 1 pound ground beef; 3 tablespoons all-purpose flour; 1 tablespoon canola oil; 1 can (28 ounces) diced tomatoes, undrained; 1 garlic clove, minced; 1/2 teaspoon ground cumin; 1 can (16 ounces) kidney beans, rinsed and drained; CORNMEAL DUMPLINGS:; 1-1/2 cups biscuit/baking mix; 1/2 cup yellow cornmeal; 2/3 cup 2% milk; Minced chives, optional