French Onion Soup Stuffed Dates with Blue Cheese

Preheat oven to 375°F (190°C).

In a skillet over medium heat, melt butter. Add the sliced onion and cook, stirring occasionally, until softened and deeply caramelized, about 20-25 minutes. Be patient and stir frequently to prevent burning. Reduce heat if needed.

Stir in brown sugar and balsamic vinegar to the caramelized onions. Cook for another 2 minutes until the sugar has dissolved and the mixture is slightly thickened. Season with salt and pepper to taste.

Remove from heat and let cool slightly.

Slice each date lengthwise, being careful not to cut all the way through. Open the date to create a pocket.

Spoon a small amount of the caramelized onion mixture into each date. Top with crumbled blue cheese and chopped walnuts.

Place the stuffed dates in a small baking dish.

Bake in the preheated oven for 8-10 minutes, or until the blue cheese is melted and the dates are warmed through. Watch carefully to avoid burning.

Garnish with fresh thyme (optional) and serve immediately.