Read all recipe instructions and ingredient notes before beginning. Preheat the oven to 350F. Line the cupcake tin with cupcake liners.
In a large mixing bowl, sift the flour, baking powder, salt, and matcha powder together and mix. Set aside.
1 ¼ cup all purpose flour, 1 ¼ teaspoon baking powder, ¼ teaspoon salt, 2 tablespoon matcha powder
Using your stand mixer with the paddle attachment or electric hand mixer, cream the butter and sugar together for 5 minutes on medium high. Scrape the sides of the bowl.
½ cup unsalted butter, ¾ cup sugar
Mix in the eggs 1 at a time on low speed. Then, beat in the vanilla until well combined.
2 large eggs, 1 tablespoon vanilla extract
Mix in the dry ingredients and buttermilk on medium-low speed. Do this by mixing the dry ingredients in ⅓ at a time, alternating with the buttermilk until just combined.
½ cup buttermilk
Using a large (3 tbsp) cookie scoop or spoon, fill the cupcake liners ¾ of the way full. Bake at 350F for 17-20 minutes or until the cupcakes spring back when lightly touched.
Remove the cupcakes from the oven. Let them cool in the baking pan for 5 minutes before transferring to a wire cooling rack. Cool completely before frosting.
Buttercream Frosting
Using your stand mixer with the paddle attachment or electric hand mixer, beat the softened butter for 8-10 minutes on high speed. Stop occasionally to scrape the sides of the bowl with a rubber spatula.
½ cup unsalted butter
Once the butter is creamy, mix in the vanilla.
1 teaspoon vanilla extract
Mix in 1 cup of powdered sugar on low for 3 minutes. Then, repeat with the remaining powdered sugar and matcha powder.
Add in the heavy cream 1-2 tablespoon at a time until the desired consistency is reached. 3-4 tablespoon is usually perfect for piping.
2-4 tablespoon heavy cream
Scoop the buttercream into a piping bag fitted with a piping tip. Pipe frosting onto the cupcakes and enjoy!
Video
Notes
Room temperature ingredients: Make sure the butter and eggs are at room temperature so they blend into the batter easily.Flour: Measure the flour with a kitchen scale for the most accurate bake. If you don't have a kitchen scale, measure your flour using the spoon and level method.Frosting: Let the cupcakes cool completely before frosting, about 1-2 hours. The buttercream will melt and slide off if the cupcakes are too hotCounter: Store unfrosted cupcakes in an airtight container or Ziplock bag on the counter for 3-5 days.Refrigerator: Store leftover buttercream and frosted cupcakes in an airtight container or bag in the refrigerator for up to 5 days.Freezer: Unfrosted cupcakes and buttercream can be stored in the freezer for up to 3 months. Store them in separate airtight containers or freezer bags. The day before serving, thaw the cupcakes at room temperature and the buttercream in the refrigerator.