1. Preheat the Oven
   Preheat your oven to 350°F (175°C). Grease an 8×8-inch baking pan or line it with parchment paper for easy removal.
2. Prepare the Matcha Mixture
   In a small bowl, sift the matcha powder to remove clumps. Set aside for later use.
3. Melt Butter and Combine with Sugar
   In a medium saucepan, melt the butter over low heat. Remove from heat and stir in the sugar until fully dissolved. Allow the mixture to cool slightly.
4. Mix Wet Ingredients
   In a large bowl, whisk the eggs and vanilla extract until combined. Gradually add the butter and sugar mixture, whisking continuously to avoid cooking the eggs.
5. Incorporate the Matcha Powder
   Gently whisk the sifted matcha powder into the wet mixture until smooth and well-blended. The batter should have a vibrant green color.
6. Combine Dry Ingredients
   In a separate bowl, combine the flour, baking powder, and salt. Slowly fold the dry ingredients into the matcha mixture, being careful not to overmix.
7. Add Optional Ingredients
   If using white chocolate chips or nuts, gently fold them into the batter for added texture and flavor.
8. Pour and Bake
   Pour the batter into the prepared pan, spreading it evenly with a spatula. Bake for 25–30 minutes or until a toothpick inserted into the center comes out with a few moist crumbs.
9. Cool and Serve
   Allow the brownies to cool completely in the pan before slicing. For clean edges, use a sharp knife and wipe it between cuts.

Enjoy your homemade matcha brownies with your favorite tea or coffee! Would you like variations or storage tips added?