Banana Matcha Slush

2 oz Crème Isabelle à la Menthe
2 oz oat milk
0.75 oz simple syrup
¼ cup frozen banana (around ½ banana)
1 tsp (5 ml) matcha tea powder
5 ice cubes

1 banana slice

1. Combine all the ingredients, including the ice cubes, in an electric blender. 
2. Blend until the texture is slushy. 
3. Pour into a glass and garnish with a banana slice.