Cut Tofu Block in 3 equal size pieces. Lay slices between paper towel to absorb moisture. Then put something about one pound or so on top to press tofu. I used a cutting board but really anything will work that weighs about a pound. Let Tofu press for at least 30 minutes.Preheat oven to 400 degrees. In a bowl mix Salt,Pepper,Garlic and Cornstarch. Stir to combine.Then add the Olive Oil and stir to form a paste with the spices.Cut Tofu into 1 inch cubes and put in bowl of spice mixture and toss gently to coat being careful not to break up tofu pieces.Place Tofu pieces on parchment paper lined sheet pan in a single layer and bake 15 to 20 minutes. Then flip tofu pieces and bake an additional 15 to 20 minutes. Remove from oven.Make stir fry sauce. Mix together Soy Sauce,Sesame Oil,Rice Vinegar,Cornstarch,Water,Chili Flakes and Sugar. Stir to Mix well. Make sure before you add stir fry sauce to pan that you stir to combine it so it is not settled.Heat pan over medium high heat. Add Tablespoon of Olive Oil to pan. Sauté Onion for 4 to 5 minutes. Add garlic and ginger and saute till fragrant. Then add stir fry sauce and stir well to combine. Wait for sauce to thicken. Lower heat a bit and then toss in Tofu to coat. If sauce is too thick add a little water /4 cup at a time till desired thickness. Top with sesame seeds and chopped scallions and serve.Serves 2