Beat 2 eggs in a bowl. Toss with farfel. Melt butter or chicken fat in a skillet. Cook farfel over low heat, stirring often, until golden brown. Remove from heat and let cool 10 minutes.
Beat remaining 2 eggs with sugar, cinnamon, salt, vanilla, lemon juice, and grated apple. Stir in cooked farfel, diced apple, and raisins.
Spray 4 of 6 wells in a jumbo muffin tin with non-stick spray. Divide mixture between the muffin wells (if there is a lot of thin liquid in the bottom of the bowl, leave it behind). Bake in preheated oven 30 minute Let cool 10 min in pan, then run a knife around the inside of each well then turn out. Serve hot or cold.