Cinnamon Plum Cake with Greek Yogurt

Instructions:

1. Preheat oven to 350°F (175°C). Grease a 9-inch round cake pan and line the bottom with parchment paper.
2. In a large bowl, whisk together the whole wheat pastry flour, baking powder, 1 tbsp cinnamon, and salt until combined.
3. Create a well in the center of the dry ingredients and add the Greek yogurt, 115g maple syrup, egg, vanilla, and 30ml melted coconut oil. Stir with a spatula until just combined, ensuring not to over-mix.
4. Pour the batter into the prepared pan and smooth the surface.
5. Toss the sliced plums with lemon juice and 1 tsp cinnamon, then press them gently into the batter in a concentric circle pattern.
6. In a small bowl, mix the rolled oats, 28g maple syrup, 14g melted coconut oil, and 0.5 tsp cinnamon until a clumpy paste forms. Sprinkle evenly over the plums.
7. Bake for 45-50 minutes until the edges are a deep mahogany-brown and the center is set.