White Chocolate and Raspberry Muffins

Name: White Chocolate and Raspberry Muffins
Prep time: 5 min
Cook time: 35 min
Total time: 40 min
Cuisine: American
Ingredients: baking spray; 2 ¼ cups all-purpose flour; 3/4 tsp salt; 1½ tbsp baking powder; ¼ tsp baking soda; 1½ cups raspberries (fresh or frozen (see note), washed and dried); 1 cup granulated sugar; 1/2 cup unsalted butter (room temperature); 2 large eggs (room temperature); 1 tsp pure vanilla extract; 1 tsp lemon zest; ⅔ cup full-fat buttermilk* (room temperature (plus 1 tbsp more if needed)); ¾ cup white chocolate chips (or chopped white chocolate); ¼ cup turbinado sugar (for topping)