Preheat oven to 375F (190C).
Prepare protein sources by sautéing or poaching until cooked through.
Steam or roast vegetables until tender-crisp.
Layer ingredients in a 9x13 inch baking dish starting with grains or root vegetables.
Top with lean protein and vegetables.
Pour liquid binders such as whisked egg whites or Greek yogurt mixtures over the layers.
Bake for 25-35 minutes until the internal temperature reaches 165F (74C) and the surface is golden.
Rest for 10 minutes before slicing into 21 portions.