Kung Pao Brussels Sprouts

Name: Kung Pao Brussels Sprouts
Ingredients: 2 pounds brussels sprouts, halved; 1/4 cup extra virgin olive oil, divided; Kosher salt and ground black pepper; 1 tablespoon cornstarch; 3 medium or 2 large garlic cloves, minced; 2 tablespoons sambal oelek, see notes; 1/2 cup soy sauce; 1/2 cup water; 2 teaspoons seasoned rice vinegar; 3 tablespoons granulated sugar; 6 dried chiles de árbol, lightly crushed (see notes); 1/2 cup unsalted roasted peanuts