Preheat your oven to 350°F (175°C). Grease a loaf pan and set aside.
In a bowl, whisk together the flour, baking powder, and salt.
In another bowl, whisk the sugar, eggs, yogurt, oil, and lemon zest until smooth.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Gently fold in the raspberries.
Pour the batter into the prepared loaf pan and smooth the top.
Bake for 50 minutes or until a toothpick inserted into the center comes out clean.
Let the loaf cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.