Guava Covered Cheese Ball

2 packages extra sharp Kaukauna cheese
8 ounces cream cheese
1 medium onion, grated
1/2 teaspoon Worcestershire sauce
1 (16 ounce) package pecan halves
Guava jelly

Blend well the cheeses, Worcestershire sauce and onion. Form into a ball; cover with pecans and chill. Just before serving, spread with guava jelly.