You could also use a grapefruit spoon, like this one on Amazon, for deeper lines. Flour the spoon a bit to ensure that it doesn't get stuck to the dough. Then, holding the spoon upside down ...

Gently scrape out the tomato seeds using a spoon (a grapefruit spoon works very well). Using a grilling skewer or toothpick, ...

Discard seeds. To serve, divide hot oatmeal among 4 bowls. Spoon grapefruit and its juices on top. Add dollops of yogurt and drizzles of both tahini and maple, to taste. Sprinkle with nuts and a ...

Pour it into the lined tin on top of the grapefruit slices and smooth out flat with the back of a wooden spoon. Bake for 1 hour until golden-brown and a skewer inserted in the middle comes out clean.