Heat oven to 350. Generously grease bottom of loaf pan, 9x5x3. Stir all ingredients in pan with fork until moistened; beat vigorously 1 minute. Bake until wooden pick inserted in center comes out clean, 55-65 minutes. Cool 5 minutes. Run knife or metal spatula around sides of loaf, pressing gently to loosen; remove from pan.
High Altitude: Heat oven to 375. Miix all ingredients in bowl. Decrease baking mix to 2 cups and sugar to 2/3 cup. Add 1/4 cup flour. Pour batter into pan. Bake 50-55 minutes.