This is task 3 of 3 in The Icing on the Cake quest line.
Tasks:
Task 1: Bake 8 times with vanilla on the cake oven.
Task 2: Bake 5 frosted lemon cakes on the cake oven.
Task 3: Earn 2 mastery stars for Black Forest cake.
Rewards:
1. 70 coins
2. 2 vanilla
3. 1 dessert floral display