✔️ Try not to overcook the turkey burgers — they can dry out quickly. Cook until just done.
✔️ Caramelizing the onions with a little sugar adds an extra layer of flavor.
✔️ Use good-quality Swiss cheese for the best melt and taste.
✔️ Toast your buns to prevent sogginess and add a nice crunch.
✔️ The Dijonnaise can be made ahead of time and stored in the fridge for up to 5 days.