Preheat oven to 350(F) degrees and prepare muffin tin with non-stick spray. In a small bowl, mix milk and lemon juice and let curdle for a few minutes. Add baking soda and salt then stir again. Set aside.
In a large mixing bowl, whisk butter and sugar until combined. Add applesauce and eggs then whisk again. Add in the milk mixture and whisk vigorously until evenly combined.
Use a spoon to stir in cornmeal and flour. Do not over mix. It should look a little bit thin and somewhat lumpy. Evenly divide batter into prepared muffin tine. Bake for 25-27 minutes or until edges are golden brown.
Let cool for a few minutes before serving. Will keep in an airtight container for a few days.
Recipe by Simple Green Moms at https://simplegreenmoms.com/simple-cornbread-muffins/