Tofu Stir-Fry with Asparagus and Cashews

0 Gently toss tofu in 1 Tablespoon cornstarch, salt, and garlic powder until evenly coated. Set aside. 
1 Whisk together all ingredients for sauce (or place in a jar with a lid and shake well). You’ll need to whisk or shake extra well to dissolve all lumps of cornstarch. Set aside.
2 In a large skillet over medium heat 2 Tablespoons cooking oil. When oil begins to shimmer, add tofu in a single layer, leaving some space between the cubes (do this in batches if needed, adding more oil if the pan starts to look dry). Cook on one side until golden brown and then continue turning until golden brown on nearly all sides, 6 to 8 minutes total. Transfer tofu to a paper towel-lined plate. 
3 Return skillet to heat and add 1 Tablespoon cooking oil. When oil begins to shimmer, add asparagus. Saute until bright green and nearly tender, 3 to 5 minutes.
4 Pour sauce over asparagus and simmer until thickens slightly, 1 to 2 minutes more.
5 Remove asparagus from heat and fold in tofu, cashews, and green onions.
6 Serve stir-fry over cooked rice or noodles.