Minimal prep, maximum flavor—the way holiday breakfast should be.
In bowl, mix first 7 ingredients. Spread evenly in greased 8-inch square baking dish. In another bowl, whisk milk, 1/3 cup honey, egg, and vanilla. Pour over oats. Bake at 375° until set, about 30 minutes. Drizzle with butter. Serve oatmeal with yogurt and more honey.