Place cast iron skillet into an oven and preheat to 375°F. Combine cornmeal and milk in a bowl and let sit for 30 mins while you combine the flour, protein powder, baking powder, baking soda, salt, and Swerve. In another bowl, mix together the melted butter, honey, applesauce, and eggs. After the cornmeal has soaked, combine with the wet ingredients and mix thoroughly. Add the dry ingredients and mix until just combined. Carefully remove cast iron skillet from the oven & pour batter into skillet and return to oven. Bake for 30 mins. Let cool for 10 minutes before slicing into 16 slices. (note: it tastes even better the next day! toast in an air fryer before serving to make it extra amazing)