Spinach Pilaf Pie

Name: Spinach Pilaf Pie
Ingredients: 1¼ cups (156 g) all-purpose flour; ½ tsp. baking powder; ½ tsp. Diamond Crystal or ¼ tsp. Morton kosher salt; 1 large egg; 2 Tbsp. extra-virgin olive oil; 2 Tbsp. plain whole-milk Greek yogurt; 1 cup basmati rice; 2 lb. frozen chopped spinach, thawed; 4 Tbsp. extra-virgin olive oil, divided; 2 Tbsp. chilled unsalted butter, plus 4 Tbsp. melted; 2 medium leeks, white and pale green parts only, thinly sliced; 2 tsp. Diamond Crystal or 1¼ tsp. Morton kosher salt, plus more; Zest and juice of 1 lemon; 7 oz. feta, crumbled; ½ cup (packed) coarsely chopped dill, plus sprigs for decorating; ⅓ cup golden raisins, plus more for decorating; ⅓ cup sliced almonds, plus more for decorating; Freshly ground pepper; All-purpose flour (for surface); 1 garlic clove, finely grated; 1 cup plain whole-milk Greek yogurt