Lightly spray 8" square baking dish with nonstick cooking spray
Whisk together flour, maseca, sugar, baking powder, baking soda and chia seeds.
Add plant milk and applesauce to the flour mixture. Stir until just combined. Add more milk if too think- it should be thick enough to spread into a baking pan with a spatula, but not dry.
Spread into baking pan. Bake for 15-20 minutes, or until a toothpick inserted in the center comes out clean.