Alternate adding the dry ingredients and the buttermilk starting and ending with the dry ingredients. So, add 1/3 of the flour mixture, then half of the buttermilk, then 1/3 of the flour, etc.
7 Mix until the dry ingredients are just incorporated.
8 Portion the batter into the cupcake liners filling just over 3/4 of the way full.
9 Bake at 350 for 10 minutes, then rotate the cupcakes and bake an additional 8-10 minutes or until the edges are just starting to brown and a toothpick comes out mostly clean with a few moist crumbs attached.
10 Let cool completely before frosting.
Bailey’s Buttercream
11 Cream the butter in the bowl of a stand mixer with the paddle attachment for 10 minutes, scraping down the bottom and sides of the bowl occasionally.
12 Add the vanilla and salt and mix to combine.
13 Add 1/2 of the powdered sugar, mix on low for 3 minutes, then repeat with the remaining powdered sugar.
14 Add the Bailey’s and mix until combined.
15 Add the heavy cream until you reach your desired consistency.
16 Use a 1M tip to pipe the buttercream onto the cupcakes.