Chop the radicchio coarsely and cut the pumpkin (or butternut squash) into small cubes.

Heat 1/2 the butter in a skillet and add the minced scallion. Cook on medium/low for 3 minutes. Add The pumpkin and radicchio and cook on medium/high for 10 minutes, stirring often. Allow to cool and combine with the ricotta, salt and pepper.

In a saucepan, whisk the egg yolks with the sugar; add the flour, then gradually the wine and broth until smooth. Season with salt and pepper, and cook in a bain marie (http://www.wikihow.com/Make-a-Double-Boiler-(Bain-Marie) ) over low heat, stirring with a wooden spoon, until it thickens; at the end, add the remaining butter to the sauce. Keep warm.

In he meantime, cook the lasagnas according to instructions in a large pot of salted water.

Drain them with a slotted spoon, place them on paper towel (blot them dry on both sides. Spread one side with the ricotta/vegetable cream, leaving 1/2 " margins, and then roll the pasta up on itself into cylinders.

Arrange them on a baking tray lined with parchment, brush them with little melted butter, cover with aluminum foil, and bake for about 15 minutes at 350F in a pre-heated oven. Serve warm, topped with the Moscato sauce and the slivered almonds. You can serve some parmigiano or grana for those who prefer to add some grated cheese on top.

*** if the semi-sweet egg sauce is not your thing, you can top the manicotti with a bechamel sauce or simply some melted butter and grated cheese.