Preheat oven to 350F.
Spread oats on a baking sheet. Bake 8-10 minutes, until golden, shaking the pan halfway through cooking to promote even toasting; set aside.
Meanwhile, in a medium saucepan, combine water, sugar, lemon juice and cinnamon. Set pan over medium heat and simmer 5 minutes, stirring occasionally with a wire whisk. Add apple slices and raisins, cover and simmer 5 minutes, until apples are tender. Spoon compote into four individual bowls; top with toasted oats.