These Nut-Filled Shortbread Cookies Will Be Your New Favorites

Ingredients

• 1 cup (115 g) walnuts or pistachios
• 2 tbsp white US granulated (UK caster) sugar
• 1 1/2 tsp orange blossom water (for walnuts) or rose water (for pistachios)
• 1/8 tsp ground cinnamon (for walnuts)
• 1 2/3 cups (255 g) semolina flour
• 1 stick (4 oz/115 g) unsalted butter, melted
• 1/4 cup (2 fl oz/60 ml) vegetable oil
• 1/2 cup (70 g) all-purpose (plain) flour
• 1/4 cup (50 g) white US granulated (UK caster) sugar
• 3/4 tsp fine sea salt
• 1/2 tsp instant or active dry yeast
• 1/2 tsp ground mahleb
• 2 tbsp water
• 1 tbsp orange blossom water
• 1 tbsp rose water
• Powdered (icing) sugar, for dusting