Bake cookies for allies using Cabal Oil and other ingredients.
Ikora Rey can be found in the Tower Bazaar and prefers Traveler Donut Holes, which use Cabal Oil and Flash of Inspiration.
Shaxx can be found in the Tower Courtyard and prefers Vanilla Blades, which uses Cabal Oil and Sharp Flavor.
Cabal Oil can be gathered by defeating Cabal combatants.
Additional information about ingredient source and usage can be found by viewing the details screen on Eva's Holiday Oven 2.1.