Mix Yeast, Milk, Sugar, Flour, Egg Yolk, Salt, And Vegetable Oil. Allow The Dough Rise And Then Form Into Small Buns. Mix All Filling Ingredients Together. Roll Out Bun And Spread Filling In The Center Of The Bun. Fold Over And Seal. Allow To Rise. Brush Surface With Egg. Bake At 325 Degrees For 20 Minutes. Serve.