Put the peas in a bowl and defrost. Peel and wash the carrots and cut them into small cubes. Peel and chop the onion. Heat oil in a pot. Fry onions and carrots for 1-2 minutes.
Add tomato paste and flour and fry briefly. Deglaze with broth and simmer covered for about 20 minutes. Wash parsley, shake dry and chop the leaves of 4 stalks finely. Remove 1/3 of the carrot cubes.
Puree the carrot sauce. Add diced carrots and peas to the sauce and bring to the boil. Add chopped parsley and season with salt and pepper. Cook pasta in boiling salted water according to package instructions.
Drain the pasta and mix with the vegetable sauce. Arrange noodles on plates and sprinkle with cheese. Bake 2 plates in a row under the grill of the oven for 5-10 minutes until golden brown. Garnish with parsley.