Preheat the oven to 350F and Butter a 9-10-inch glass pie dish.
Whisk the eggs, then add the milk, vanilla, lemon zest andGrand Marnier. Whisk to combine.
Add the dry ingredients; sugar, flour and salt to the wet mixture. Whisk until combined.
Pour the batter into the buttered pan and then arrange the cherries evenly, cut side down, on top.
Bake for 40-45 minutes. Remove and let stand for 15 minutes. Serve warm.