First, preheat the oven to 350 degrees Fahrenheit.
Then, in a large bowl, mix the wet ingredients (applesauce, sourdough discard, honey, melted butter, eggs, and vanilla.
Next, in a medium-sized bowl, combine the dry ingredients (flour, salt, baking powder, and baking soda, cinnamon).
Slowly add the dry ingredients to the wet ingredients and mix well. The easiest way is using a stand mixer with a paddle attachment.
Line a mini muffin tin with muffin liners, cupcake liners, paper liners, or spray with nonstick spray.
Using a small cookie scoop, add the muffin batter to the mini muffin tin.
Prep the loaf pan with nonstick cooking spray and add the remaining sourdough apple cinnamon muffins mixture to the loaf pan.
Place the muffin tin and the loaf pan into the oven. The minin muffins will bake for 15 minutes and the bread will bake for 45 minutes.
Check to see if the muffins and the bread are done by inserting a toothpick into the center of a muffin or loaf, it should be clean when removed. If not, then bake for a little longer.
Allow the muffins to cool for 15 minutes before enjoying with a little butter.