Oatmeal Baked Apples

Name: Oatmeal Baked Apples
Ingredients: ½ cup old-fashioned oats; ¼ cup dried tart cherries; 2 Tbsp. raw pecans; 2 Tbsp. raw shelled pumpkin seeds (pepitas); 2 Tbsp. raw shelled sunflower seeds; 1 Tbsp. vegetable oil; 3 Tbsp. plus 1½ tsp. pure maple syrup, divided; plus more for drizzling; ¼ tsp. Diamond Crystal or Morton kosher salt; 4 medium red baking apples, cored, halved; 1 cup sour cream