1cupall-purpouse flour, plus a bit for pan preparation
1-1/2teaspoonsbaking powder
1pinchsea salt
13tablespoonsbuttersoftened
3/4cupgranulated sugar
4egg yolks
2wholeeggs
1teaspoongrated lemon zest
1teaspoonvanilla
4plumspitted and quartered
2tablespoonsbrown sugar
Instructions
Preheat oven to 350 degrees. Grease and lightly flour cake pan.
Mix dry ingredients (cornmeal, flour, baking powder and salt) together.
Beat butter and granulated sugar until pale yellow and fluffy. Add egg yolks, one at a time, beating between additions and scraping down sides of the bowl. Add whole eggs in same manner.
Mix in zest and vanilla; then mix in dry ingredients. Spread into pan. Press plum quarters halfway down into batter in non-overlapping pattern. Sprinkle brown sugar over the top.
Bake for about 45 minute until golden brown on top and a toothpick comes out of the center fairly clean. Cool for 10 minutes in the pan, then release (if using Springform) and cool as desired.