01 - Preheat oven to 350°F. Grease and line two 8-inch round cake pans with parchment paper.
02 - Heat milk until just simmering, steep chai tea bags for 10 minutes, then remove bags squeezing out excess liquid. Cool milk to room temperature.
03 - Whisk together flour, baking powder, baking soda, salt, cinnamon, ginger, cardamom, cloves, and nutmeg in a large bowl.
04 - Beat granulated sugar, brown sugar, and vegetable oil until smooth. Add eggs one at a time, beating well after each, then mix in vanilla extract.
05 - Alternately add dry ingredients and chai-infused milk to wet mixture, beginning and ending with dry. Stir until just combined, avoiding overmixing.
06 - Divide batter evenly between pans and bake 30–35 minutes, or until a toothpick inserted in the center comes out clean.
07 - Let cakes cool in pans for 10 minutes, then transfer to wire rack and cool completely.
08 - Beat cream cheese and butter until smooth. Gradually add powdered sugar, vanilla extract, and salt, beating until fluffy.
09 - Place one cake layer on serving plate. Spread half the frosting evenly on top. Place second layer and cover with remaining frosting.
10 - Optionally garnish with a sprinkle of cinnamon or chai-spiced tea leaves before serving.