Directions

1. In a large deep skillet heat oil over medium-high heat; add onions and sauté, stirring frequently, until very soft, about 10-15 minutes. Add wine, vinegar and sugar, reduce heat to low and simmer, stirring occasionally, until almost all of the liquid has evaporated, about 10 minutes. The onions should be slightly caramelized. Stir in thyme, salt and pepper. Remove from heat and cool. Keep chilled until ready to serve.
2. Prepare a medium-hot fire in grill. Grill bratwurst directly over fire, turning, until evenly browned, about 5-7 minutes. Remove from grill and serve with marmalade.