Preheat & Prep: Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper.
Mix Dry Ingredients: In a bowl, whisk together flour, baking soda, and salt.
Cream Butter & Sugar: Beat the butter and sugar until fluffy and smooth.
Add Wet Ingredients: Mix in the egg and vanilla extract.
Add Matcha: Stir in the matcha powder until fully combined.
Add Dry Ingredients: Gradually incorporate the dry ingredients into the wet mixture.
Add Chocolate Chips: Fold in the chocolate chips.
Scoop Dough: Drop spoonfuls of dough onto the prepared baking sheet.
Bake: Bake for 10-12 minutes until the edges are golden. Let cool.
Make Coffee Ripple: Dissolve coffee granules in hot water, then stir in powdered sugar.
Drizzle: Drizzle the coffee mixture over the cooled cookies.