Mixed mini quiches

Ingredients

• 1 3/4 cups plain flour
• 150 grams chilled butter, chopped
• 1 egg yolk, plus 3 eggs extra
• 1-2 tablespoons iced water
• 6 grape tomatoes, sliced
• 3 asparagus spears, thinly sliced, blanched
• 50 grams blue cheese, crumbled
• 1/4 cup thickened cream
• 2 tablespoons finely grated parmesan
• chervil sprigs, to serve