In A Medium Bowl, Combine Egg Beaters, Sugar, Milk And Peanut Butter. Mix Until Smooth And Creamy. Add Baking Mix And Blend Well. Spoon Batter Into Greased Muffin Cups, Filling Each 1/2 To 2/3 Full. Top Each Muffin With A Little Jelly (1/2 Teaspoonful). Bake At 375 Deg F. For 15 To 20 Minutes Or Until Golden Brown. Serve Warm. The Jelly Or Jam Used Sinks To The Center For A Wonderful Suprise When Eaten.