Peel the celery and onion. Clean the fennel. Finely dice celery, onion, fennel, artichoke heart and olives. Heat 1 teaspoon of olive oil in a frying pan. Sauté everything in it. Add 5-6 tablespoons of water and fry on medium heat for about 5 minutes.
Put the capers into a high mixing bowl and puree. Season with pepper. Cut off the lid of the peppers. Cut each pepper into 3 equally wide rings and remove the seeds. Fill the vegetable mixture into the peppers with a teaspoon and smooth them down.
Place on a baking tray lined with baking paper and bake in a preheated oven (electric range: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 15 minutes. Meanwhile bring cream to the boil and simmer for 1-2 minutes at low heat.
Add grappa. Season with salt and pepper. Keep warm. Chop the morels finely. Clean the spring onions. Heat 1 teaspoon of olive oil in a frying pan and fry the spring onions all around. Arrange 3 spring onions parallel to each other on plates.
Place 3 filled pepper rings next to each. Scatter a wavy line of chopped morels. Drizzle the sauce around the outside and serve immediately.