Prepare the vegetables. Peel the leek and cut into rings. Cut the peppers into strips. Clean the mushrooms and cut them into slices. Peel and slice the carrots. Peel and cut the garlic. Meanwhile, cook the penne al dente according to the instructions on the packet and set aside.
Put the vegetables and olive oil in a pan and cook well. Then add the tomatoes. If necessary, a little more tomatoes are also possible. Season the vegetables with salt, pepper and paprika and optionally add a pinch of coriander. Let the sauce boil down for 1 - 2 minutes and then stir in the cream. Lightly season the sauce again.
Put the penne in the pan, mix well and cook for about 15 minutes. Then garnish with finely chopped parsley, chives and tomatoes as desired.