Steak au Poivre and Ratatouille Hash

Name: Steak au Poivre and Ratatouille Hash
Ingredients: 2 tablespoons canola oil; Kosher salt; 2 teaspoons coarsely ground black pepper; One 12-ounce hangar steak; 2 tablespoons red wine vinegar; 1 1/2 tablespoons Dijon mustard; Kosher salt and freshly ground black pepper; 1/2 cup plus 1 tablespoon extra-virgin olive oil; 1 tablespoon chopped fresh basil; 3 tablespoons canola oil; 1 medium red bell pepper, diced; 1 medium yellow bell pepper, diced; 1 zucchini, diced; 3 cloves garlic, finely chopped; 1 cup grape tomatoes; 2 large Yukon gold potatoes, par cooked in salted water (not peeled) and diced; 1/2 cup chopped fresh flat-leaf parsley