Cook the lentils in 1⁄2 l boiling water for 8-10 minutes. In the meantime toast bread. Whisk lemon juice with salt, pepper and 1 pinch of sugar. Embezzle oil. Wash the rocket, shake dry and chop coarsely. Wash parsley, shake dry and also chop.
Pour off the lentils, quench and drain. Wash, quarter, core and roughly grate apples. Mix the lentils, parsley, rocket salad and grated apples with the vinaigrette. Season salad with salt and pepper. Cut toast into cubes. Arrange salad and sprinkle on top.