In a large skillet over medium heat, heat oil and butter. Add onions and season with salt and pepper and cook, stirring occasionally until onions are fully caramelized. Once done, stir in the vinegar and thyme leaves. Let cool to room temperature.

Preheat the oven to 375°F. Cut each puff pastry sheet into 9 squares and place on a parchment-lined baking sheet. Top each with a brush of butter and 1 Tbsp. of caramelized onions leaving ½” boarder on all sides. Brush the exposed edges with egg and top each with a bit of goat cheese and bake for 25 minutes.

While the pastries bake, prepare your chicken bites according to the package instructions.

Once the pastries are finished, top each with one chicken bite, a drizzle of honey, and a bit more thyme, and serve!