Preheat oven to 350F/180C. Grease a standard 9”x5” loaf pan.
Melt the butter in a pot over low heat (or in the microwave) and set aside. It needs to reach room temperature before use.
Add the yogurt into the sugar mixture and mix it on medium-slow speed.
Pour batter into prepared loaf pan and bake for approx. 35-45 minutes or until a toothpick inserted in the center comes out clean. Cool in pan 10 minutes then invert onto serving platter.
Stir icing sugar and lemon juice until well blended and pour onto the warm cake.