01 -
Heat the oven to 375 degrees. Line a standard muffin tin with muffin liners.
02 -
In a large bowl, whisk together the mashed sweet potato, milk, avocado oil, brown sugar, apple cider vinegar, and eggs until well combined.
03 -
Add the cornmeal and flour to the wet mixture. Sprinkle the baking powder, baking soda, and salt over the top so they mix in more evenly throughout the batter.
04 -
Using a large spoon or rubber spatula, mix gently until the dry ingredients are just incorporated. Don't overmix - a few lumps are fine and actually help keep the muffins tender.
05 -
Using a 1/4 cup measuring cup, portion the batter evenly into the prepared muffin tin. Fill each liner about three-quarters full.
06 -
Bake until golden brown and cooked through, 18 to 20 minutes. If you have a kitchen thermometer, bake until the muffins reach 200 degrees in the center - this ensures they're cooked through but not overdone and dry.
07 -
Allow the muffins to cool for at least 10 minutes in the pan before removing and enjoying. This helps them firm up so they don't fall apart.