Rhubarb Galette with Tonka Frangipane - Petites Choses

Ingredients

• 3 cups plain flour, more for dusting
• 1 tbsp sugar
• 1 tsp salt
• 170g unsalted butter, very chilled, cubed
• 1/2 cup ice water (up to 2-3 tbsp extra)
• 1 egg yolk, beaten (for the wash)
• 1 tbsp raw sugar (for sprinkling)
• 1 1/4 cup almond powder
• 1/2 cup caster sugar
• 2 tbsp butter, melted
• 2 medium eggs
• 1 tsp vanilla extract (I used tonka powder)
• 8-10 stalks rhubarb, cut into 3-inch pcs diagonally
• 1/4 cup white sugar