Split vanilla bean lengthwise. Using the tip of a sharp knife, scrape seeds from the center into a small saucepan; add bean.

Add remaining ingredients to pan; cook and stir over medium heat 5-7 minutes or until heated through. Remove from heat; let stand, covered, 15 minutes to allow flavors to blend.

Discard vanilla bean. Store in an airtight container in the refrigerator up to 4 days. Stir before using.