Preheat oven to 425°F (220°C).

Grease a 12-cup muffin tin.

In a large bowl, combine flour, cornmeal, baking powder, baking soda, and salt.

In a separate bowl, whisk together buttermilk, eggs, and picante sauce.

Add the wet ingredients to the dry ingredients.

Add the melted and cooled butter or applesauce.

Stir just until the ingredients are blended; do not overmix.

Fill each muffin cup almost full.

Bake for 15 to 20 minutes, or until a wooden pick inserted into the center comes out clean.