In a mixing bowl, whisk the flour, baking powder and salt together until well combined.
2 cups (240 g) all purpose flour, 2 teaspoon baking powder, ½ teaspoon salt
In another bowl whisk the sugar and lemon zest together until well combined with a wet sand consistency.
1 cup (200 g) granulated sugar, 1 lemon, zested
Whisk in the melted butter, eggs, sour cream, milk and vanilla extract until well combined.
4 tablespoon (57 g) unsalted butter, melted, ¼ cup (59 ml) oil , 2 large eggs (US), room temperature, 1 teaspoon (5 ml) vanilla extract , ½ cup (120 g) sour cream, room temperature, ½ cup (118 ml) milk, room temperature
Stir the dry ingredients into the wet. Do not overmix. Let the raspberry muffin batter rest at room temperature for 30 - 60 minutes for bakery style muffins. While the muffins rest, preheat the oven to 375 F (190 C).Line (2) 12 ct. muffin pans with cupcake liners.
Fold in the fresh or frozen raspberries after the rest period. Use a 3 tablespoon sized cookie scoop to scoop the muffin batter into each of the muffin liners, alternating every other cup. 2 cups fresh or frozen raspberries
Bake the muffins at 375 F (190 C) for 18 - 22 minutes. The muffins are done when a toothpick inserted into the center comes about with a few moist crumbs or when a finger pressed gently into the center of the muffins quickly bounces back.
Cool the moist raspberry muffins in the muffin pan for 5 - 10 minutes. Carefully remove the muffins to cool to room temperature and enjoy!