Tried this on the weekend.
Roast some vegetables in the oven with a little olive oil and salt.
I used courgette slices, red onions chopped, couple of whole garlic cloves, red pepper (capsicum) cut into largish pieces, tomatoes.Takes 30-40 mins.
Cook pasta (I used tortiglioni) and drain.
Blend some mascarpone cheese into the pasta and warm through.
Add roasted veg., mix together.
Serve with a helluva lot of red wine. Delicious.