I have a recipe for bar Hermits calling for 1c. oil, 1 c. milk, 2 c. sugar, and 3 c. flour. There are a few other ingredients as well--I don't know what size pan, though the recipe says bake at 350 for 30-40 minutes. Bonus: what is the role of milk in cookie recipes? It's rare to see so much liquid involved, but I guess this will be more of a spreadable batter. Can I substitute something else--juice, water? Milk is somewhat of a commodity in my house.