01 -
In a large bowl, whisk together melted butter, sugar, and Greek yogurt until smooth. Add the egg and vanilla extract; whisk until fully combined.
02 -
In a separate bowl, sift together flour, baking powder, and salt.
03 -
Gradually add dry ingredients to wet mixture, alternating with milk. Whisk until smooth but do not overmix.
04 -
Gently fold in fresh raspberries, white chocolate chips, and orange zest to the batter, taking care not to break the berries.
05 -
Line a muffin tray with paper liners and fill each about 3/4 full with batter.
06 -
Combine flour and sugar in a small bowl, then stir in melted butter until mixture forms crumbs. Sprinkle evenly over batter in muffin cups.
07 -
Bake in a preheated oven at 350°F (175°C) for 20-25 minutes or until tops are lightly golden and a toothpick inserted comes out clean.
08 -
Remove muffins from oven and cool in tray for 10 minutes, then transfer to wire rack to cool completely.