Use our Chutney Mustard to give this open-face melt a kick.
Preheat oven to 400 degrees. Toast baguette slices directly on oven rack until lightly browned. Place on a rimmed baking sheet.
Spread top of each slice with chutney mustard. Divide bacon evenly among toasts; sprinkle with cheese. Top with onion slices. Return to oven, and bake until cheese has melted, about 5 minutes.
The chutney mustard can be refrigerated in an airtight container for up to two weeks.