Roasted apricot tiramisu for summer

Ingredients

• 1.1 lb apricots
• 1 sprig fresh rosemary
• 2 tsp vanilla sugar (1 packet)
• 1 tbsp olive oil
• 2 egg whites
• 2 tbsp sugar
• 2 egg yolks
• ⅓ cup sugar
• 1 cup + 2 tbsp mascarpone
• 1 tsp vanilla extract
• 2 tsp apricot or peach syrup
• ⅔ cup water
• 20 ladyfingers (±)
• 1 tsp chopped pistachios (±)