For the marinade, wash lemon hot, grate dry, grate peel thinly, halve fruit and squeeze juice from one half. Mix 2 tbsp. oil, lemon juice and zest. Dab meat dry and place in the prepared marinade overnight.
For the sauce, peel and finely dice the onion and garlic. Heat 1 tablespoon of oil, fry the onion and garlic for about 5 minutes. Wash the basil, shake dry, pluck the leaves from the stalks and cut into strips, except for a little to garnish.
Add the tomatoes to the onion, bring to the boil and simmer for about 10 minutes while stirring. Season with salt, pepper, basil, except for a little for sprinkling, and sugar. Keep ready sauce warm.
Mix almonds and parmesan. Whisk the eggs in a deep dish. Dab cutlets dry, season with salt and pepper and turn them one after the other in flour, egg and almond and cheese mixture. Heat 6 tablespoons of oil in portions in a large pan and fry the schnitzel in it in 2 portions for about 8 minutes while turning.
In the meantime heat 3 tablespoons of oil in a second pan and fry the gnocchi for about 8 minutes, turning them over. Season with salt. Arrange gnocchi, escalope and sauce.