preheat oven 325*

butter 9X13 baking pan

mix on med speed butter & sugar until fluffy

beat in eggs, salt, vanilla, yogurt, milk, lemon curd until mostly blended

add flour, baking soda, powder, beat until smooth.

spread half batter in pan, scatter half raspberries. then gently spread remaining batter. scatter remaining berries on top.

bake until toothpick is clean, about an hour.

cool 1 hour, then dust with powered sugar