For beef: In a heavy-duty resealable plastic bag, combine all ingredients. Seal and turn bag several times to combine; place bag in a large bowl, and refrigerate for 2 hours, turning occasionally.
Remove meat from bag, and discard marinade. Let beef stand at room temperature for 30 minutes. Preheat grill to medium-high heat (350° to 400°).
Grill, covered with grill lid, turning occasionally, for 30 to 35 minutes or until a meat thermometer inserted in thickest portion registers 135° or desired degree of doneness. Remove from grill, cover loosely with foil, and let stand for 10 minutes. Cut beef into ¼-inch-thick slices.
For sauce: In a medium saucepan, heat oil over medium heat. Add onion and garlic, and cook for 10 minutes or until onion is tender. Add bourbon, and increase heat to medium-high; cook for about 5 minutes or until liquid has nearly evaporated.
In a small bowl, stir together Worcestershire sauce and cornstarch until smooth. Add Worcestershire mixture, chili sauce, and remaining 4 ingredients to onion mixture, stirring until combined. Bring to a boil; reduce heat to medium, and cook, stirring constantly to prevent scorching, for 6 to 8 minutes. Let cool slightly before serving with beef.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/bourbon-beef-tenderloin-recipe/