Preheat oven to 400°F. Soak dry onion in water for 5 minutes. Combine biscuit mix, egg, milk, and TABASCO® Sauce in a bowl and stir until blended. Stir in onion. Turn into a greased 8-inch pie plate.
Sprinkle top with caraway seeds and brush with melted butter. Bake 20 to 25 minutes or until bread is golden brown.
Makes one 8-inch round loaf, about 8 servings.