Preheat the oven to 220ºC/425ºF conventional oven. Prepare two muffin pans with 6 muffin liners, only lining every other cupcake hole, as it helps them to dome up.
Note: If you want smaller muffins, use two 12-cup cupcake pan with 12 cupcake liners, only lining every other cupcake hole, as it helps them to dome up.
In a large mixing bowl add melted butter and granulated sugar and using a hand whisk, whisk it together until combined.
220 g butter, 200 g granulated sugar
Then add the egg, Greek yogurt and vanilla extract and whisk it together until combined.
2 large eggs, 260 g Greek yoghourt, 2 teaspoon vanilla extract
Place a sieve on the bowl and sift in the all-purpose flour, baking powder, baking soda and salt together. Gently stir the dry ingredients into the batter.
320 g all-purpose flour, 2 ½ teaspoon baking powder, ½ teaspoon baking soda, ½ teaspoon salt
In another small bowl, add raspberries and ½ teaspoon of flour and coat the raspberries with the flour.
250 g raspberries frozen or fresh + ½ teaspoon flour
Add the raspberries and chopped white chocolate and gently fold it into the batter using a rubber spatula.
Set it aside while making the streusel.