Rhubarb–Strawberry Jam Fruit Puffs

• 6 tbsp (110 g) strawberry jam
• 1 stalk rhubarb, trimmed, cut crosswise

Spread 1 tbsp of the jam over the bottom of each pastry shell. Arrange the sliced rhubarb in a single layer on top. In a small bowl, stir together the remaining 2 tbsp