Remove tofu from packaging. In a medium bowl, stir together Hoisin sauce, soy sauce, sugar, ginger, garlic, and red pepper flakes. Cut tofu into bite sized pieces. Heat olive oil in a medium cast iron pan over medium high heat. Drizzle with sesame oil and remove from heat..Extremely flavorful, General Tso s Tofu Stir Fry in just minutes! heat from dried red chilies, which you can find in most traditional and Asian grocery stores..Instructions. Gently mix tofu with flour and cornstarch to coat evenly. Heat oil in a large non stick or cast iron skillet. In the same skillet heat sesame oil over medium heat. Then add sliced shallots and fry until translucent for about min. Now add ketchup, soy sauce, vinegar, and honey..