Every kids loves PB & Jelly sandwiches; they are tasty and nutritious. These PB & jelly bars take less than an hour to make and they are surprisingly delicious. :D

Ingredients:
1 Cup Sugar
1 Cup creamy Peanut Butter
1/2 Cup butter or margarine (1 stick) softened
2 tsp vanilla extract
1 Large egg
2 Cups all purpose flour
1 1/2 Cups Old-Fashioned or Quick-cooking Oats, uncooked
1/2 tsp baking soda
1 Cup of your favorite jelly, Jam, or Preserves

Directions:

• Preheat oven to 350 F. Line 15 1/2 jelly-roll pan with aluminum foil. In large bowl, with mixer at medium speed, beat sugar, peanut butter, butter, vanilla, and egg until blended. Increase speed to high; beat scraping bowl occasionally with rubber spatula, until light and fluffy, about 1 minute. reduce speed to low. Add flour, oats, and baking soda and beat until blended.
• Transfer 4 Cups peanut butter mixture to prepared pan. With fingers, firmly press mixture evenly onto bottom of pan. Spread evenly with jelly leaving 1/4-inch border all around. Sprinkle remaining peanut butter mixture over jelly.
• Bake until top is lightly browned, 30-35 minutes. Cool completely in pan on wire rack.
• When cool, lift foil, with pastry, out of pan; peel foin away from sides. Cut lengthwise into 6 strips, then cut each strip crosswise into 7 bars.
  

Here is another one that I found interesting, but I have not tried it out yet. You sprinkle peanuts on the top, so it might taste good like that too.

http://sweetpeaskitchen.com/2011/02/25/peanut-butter-and-jelly-bars/