Cook the tortellini in plenty of boiling salted water for about 13 minutes. Clean and wash the mushrooms and cut them into quarters or halves depending on size. Peel and chop onion. Cut bacon into cubes as well and leave it crispy in a pan without fat.
Add the onions and mushrooms and fry. Pour in broth and cream, add frozen peas and bring to the boil. Wash the basil, dab dry and cut into fine strips, except for a little garnish.
Stir the basil, 30 g Gouda and 20 g Parmesan into the sauce and melt. Finally, pour in the sauce thickener while stirring, bring to the boil again briefly and season to taste with salt and pepper. Drain the tortellini and let it drain.
Arrange tortellini and sauce on plates and sprinkle with the remaining cheese. Serve garnished with basil.