Thanksgiving Dinner for One

Name: Thanksgiving Dinner for One
Ingredients: 1 sweet potato; 1 teaspoon finely grated orange zest; 1 teaspoon finely chopped thyme, plus 1 sprig; Kosher salt, freshly ground pepper; 1 turkey breast tenderloin (about 10 ounces); 1 tablespoon canola or vegetable oil; 1 large egg yolk; 5 tablespoons unsalted butter, divided; 2 tablespoons fresh orange juice, divided; 2 tablespoons coarsely chopped pecans; 2 tablespoons mini marshmallows; 1 shallot, thinly sliced; 4 ounces green beans, trimmed; 1/2 cup dry white wine