I changed up my favorite buttermilk muffin recipe by adding brown sugar and butterscotch chips and then sent it over the edge of delicious by drizzling the muffins with a brown sugar glaze.
Add the eggs one at a time, beating well after each addition. Sift together the flour, baking powder, baking soda and salt and add one third to the butter/sugar mixture and mix until just combined.
Add one cup buttermilk & mix until combined. Repeat alternating flour and buttermilk, ending with flour & mixing just until combined after each addition. Stir in vanilla & butterscotch chips.