A few notes.
If you want to get really crazy, you can trade out one stick of butter in the frosting recipe for a block of softened cream cheese. All other directions remain the same.
If you’re looking to make this dairy free, just trade out the butter for dairy free butter sticks. They’re sold in most every grocery store next to the real butter. Sub the buttermilk for a mixture of almond(or coconut) milk and 1 Tbs of vinegar. Lastly, double check your gluten-free flour mixture to make sure there’s no dairy in that. The blue-bag Cup for cup contains dairy.
To make this recipe full of gluten, swap out the gluten-free flour for regular, white unbleached flour, but up it to 3.5 cups instead of 3 cups. All other directions remain the same.