Preheat your oven to 375 degrees.
Line a 13X18 baking sheet with parchment paper, and unfold two sheets of thawed puff pastry dough.
Cut each pastry sheet into 9 rectangles. (Start by making three long rectangles cut along the seams. Then cut each rectangle into 3 smaller rectangles).
Transfer to the baking sheet.
Using a small knife, lightly score a border at least a ½ inch from the edges of each square (don’t cut all the way through). This helps the edges puff up while the center stays flat for the toppings.
Arrange thin slices of pear from two large pears inside the scored border, then sprinkle 6 oz of crumbled blue cheese, equally over the squares.
Add a pinch (1-2 tablespoons total) of chopped walnuts and a few thyme leaves to each tart.
Whisk one egg with one tablespoon of water to make an egg wash. Brush the outer border of each pastry square with the egg wash for a golden finish.
Place the puffy pastry squares on the center rack in the oven and bake for 18-22 minutes, or until golden brown.
Let cool for 2–3 minutes.
Drizzle lightly with honey just before serving for the perfect sweet–savory balance.
Serve warm or at room temperature.