In the kitchen you can create a large amount of recipes all food related. Many recipes are limited time and some require Farm Bucks to get ingredients.
It is rarely a good move to buy ingredients for the Kitchen with Farm Bucks. While many of the highest-coin recipes depend on bought ingredients, it is better to spend the Farm Bucks on animals, which will produce a much greater number of desirable ingredients and give you much more coins in return for your farm buck investment.
Beside the recipes in the kitchen, there is also the Workshop and the Crafting Kiln where you can produce a variety of recipes.