In a large bowl, cream together sugars and butter for five minutes.
Add in extract, Karo® Corn Syrup, and egg, beat together.
In a separate bowl, sift and whisk together dry ingredients.
Gently blend in dry ingredients into the wet ingredients bowl.
Fold in white chocolate chip cookies.
Cover bowl and refrigerate for 30 minutes.
Preheat oven to 350 degrees Fahrenheit.
Roll 1 tablespoon worth of dough into tall balls and place on a baking sheet lined with parchment paper or a silicone mat.
Create a small crevice in each cookie with a clean finger or the back of a small measuring spoon.
Add a ¼ teaspoon worth of guava jelly into each crevice.
Bake for 9-11 minutes, or until the edges become a golden color. Remove from oven and let sit on baking sheet for 3 minutes to continue cooking before you place cookies on a wire rack to cool.