Prep Time 20 minutes mins
Cook Time 18 minutes mins
Resting Time 30 minutes mins
Total Time 1 hour hr 8 minutes mins
For best results, ensure the cupcakes are completely cool before frosting to prevent the buttercream from melting and sliding off, and avoid overmixing the batter so the cupcakes stay light and tender rather than dense. If using matcha, start with a small amount and taste as you go since it can become bitter, and always squeeze spinach very dry before adding so it does not water down the batter. You can bake the cupcakes a day ahead and store them in an airtight container at room temperature, then frost and decorate just before serving so the “soil” stays crisp and the mint sprigs remain fresh.