Baked Hush Puppies

Name: Baked Hush Puppies
Ingredients: 1 1/2 cups fine-grind cornmeal or corn flour; 1/2 cup soft wheat flour, such as White Lily All-Purpose Flour, or cake flour; 1 Tbs. plus 1 tsp. cane sugar; 1 1/2 tsp. baking powder; 1/4 tsp. baking soda; 3/4 tsp. salt, plus more for sprinkling, optional; 1 tsp. Old Bay Seasoning, plus more for sprinkling, optional; 1/4 tsp. cayenne pepper; 1 large egg; 1 cup low-fat milk; 1/2 large sweet onion, such as Vidalia or Walla Walla, finely diced (1 cup); 1/4 cup vegetable oil, for brushing