Wash and dry fresh greens and berries. Chop mixed greens, slice strawberries, and toss blueberries in a bowl. Set goat cheese aside to soften.

In a mixing bowl, combine softened goat cheese with lemon juice and thyme. Mix until smooth and creamy, about 3-4 minutes.

In a large serving bowl, combine mixed greens, strawberries, and blueberries. Drizzle dressing and add goat cheese mixture. Toss gently.

Preheat oven to 400°F (200°C). Roll out puff pastry and cut into squares. Spoon goat cheese mixture onto each square, fold and pinch edges.

Arrange pastries on a baking sheet and drizzle honey on top. Bake for 15-20 minutes until golden brown.

Let pastries cool, then serve with salad. Garnish with thyme or honey if desired.