1 tablespoon olive oil
salt and ground black pepper to taste
4 sweet potatoes, peeled and cut into wedges
2 red bell peppers, halved and seeded
1 clove garlic
1 shallot
1 tablespoon lemon juice
1 teaspoon Dijon mustard
1 dash hot pepper sauce (such as Tabasco(r))
1 teaspoon salt
ground black pepper to taste
1/2 cup extra virgin olive oil
1/2 cup walnut oil
1/2 pound baby arugula leaves
1 (2 inch) piece Parmigiano-Reggiano cheese