1. Cut the butternut squash into cubes and the onions into pieces. Cook them in a pan of boiling water.
2. Once cooked, blend the pieces. Add a few drops of white truffle oil, truffle powder, a tablespoon of truffle honey and the crème fraîche.
3. Sauté the chanterelles in a pan with the truffle slices and a clove of garlic. Deglaze with white wine and add the chopped parsley at the end of cooking.
4. Serve the velouté in a bowl or a deep plate, arrange the chanterelles on top and a few slices of truffle. Enjoy hot.