Preheat the oven to 350 °F.

Cut the apples into quarters, remove the core, and cut the flesh into cubes of about 0.4 inches.

Mix the apple pieces with the raisins and a little cinnamon. Spread this mixture evenly in a baking dish of about 8 x 12 inches.

Roughly chop the almonds and set them aside.

Mix the olive oil with a little cinnamon, the chopped almonds, and the oats until you have a firm mixture.

Spread the oat-nut mixture evenly over the apples in the baking dish. Bake in the oven for about 25 minutes, or until golden brown.

Serve the baked oatmeal with apple and nuts warm, combined with a generous amount of Greek yogurt for a creamy touch. Enjoy!