1. Prepare the Plums:

– Wash, pit, and slice the plums into thin wedges. Set aside.

2. Mix Dry Ingredients:

– In a bowl, whisk together einkorn flour, baking powder, and salt.

3. Cream Wet Ingredients:

– In a separate bowl, beat butter (or coconut oil) with sugar until fluffy. Add the eggs one at a time, followed by vanilla extract.

4. Combine:

– Gradually fold the dry ingredients into the wet mixture, alternating with the milk or yogurt. This will keep the batter moist.

5. Assemble the Cake:

– Grease a cake pan and pour in the batter. Layer the plum slices on top in a circular pattern.

6. Bake:

– Preheat the oven to 350°F (175°C) and bake for 35–40 minutes, or until a toothpick comes out clean when inserted into the center.

7. Cool and Serve:

– Let the cake cool before serving. Optionally, dust with powdered sugar for an elegant touch.