Optional Add-ins
Preheat oven to 425°F (220°C). Lightly grease an 8x8 or 9x9 inch square pan.
In a bowl, whisk flour, sugar, baking powder, baking soda, and salt.
In another bowl, stir together milk, applesauce, oil, and vanilla.
Combine wet and dry ingredients. Stir just until smooth.
Pour batter into the pan and spread evenly. Top with optional add-ins.
Bake for 14–17 minutes, until golden and a toothpick comes out clean.
Cool slightly, slice into squares, and enjoy.