Preheat the oven to 350°F. Line a 9 x 5-inch loaf pan with parchment paper letting it hang over the sides for easier removal or grease with Pam or butter.
Cream the butter and sugar until fluffy - about 3 minutes
Add the eggs one at a time and beat on low speed until incorporated.
Add the Greek yogurt, lemon juice and vanilla extract and mix until incorporated.
In a separate bowl, mix the flour, baking powder and salt. Add it to the batter in two portions.
Fold in the raspberries and pour into the prepared loaf pan. Save a few raspberries if desired for garnishing the loaf.
Bake for 50-55 minutes or until a knife comes out clean.
White Chocolate Icing
Heat the chocolate chips and milk together until melted. Mix until silky smooth and pour over the loaf.
Swirl the raspberry jam over the icing and zest the lemon on top.
Wait until the loaf cools before slicing.
Notes
Creaming the butter and sugar long enough is important in order for the loaf to have a fine crumb and light, fluffy texture!
If you want more of a glaze rather than an icing, add more milk.
Heat the milk and chocolate together; otherwise, adding the cold milk to the melted chocolate will cause the icing to clump up.
The chocolate will harden quickly so if adding jam, swirl it on right after icing.