01 -
Set your oven to 350°F to preheat. Line 24 muffin cups with wrappers and leave them to the side.
02 -
Using a hand mixer or stand mixer, cream together the butter and sugar until the mixture looks fluffy and smooth.
03 -
Add the eggs one by one, mixing in between each. Stir in the vanilla extract. Use a spatula to clean the bowl sides and stir together again.
04 -
Alternate adding the self-rising flour, all-purpose flour, and milk into the mix. Slowly stir until everything is blended.
05 -
Gently fold chopped Oreo pieces into the batter by hand. Give the bowl one last quick mix.
06 -
Fill muffin cups about ⅔ full with batter. Bake for 18-22 minutes or until a toothpick comes out clean when tested.
07 -
Beat the butter and vanilla together in a big bowl with a hand or stand mixer. Slowly mix in the powdered sugar, then pour in the milk as you go.
08 -
Scrape the bowl’s sides and keep mixing for 1-2 minutes until the frosting is super fluffy. Carefully fold the crushed Oreos in.
09 -
Spread or pipe the frosting onto the cooled cupcakes and place a mini Oreo on top of each.