1. Cut tofu lengthwise into 4 equal pieces; cut each piece crosswise into 1/2-inch squares. Place tofu on several layers of paper towels; cover with additional paper towels. Let stand 30 minutes, pressing down occasionally.
2. Heat a large wok or skillet over high heat. Add 1 1/2 teaspoons canola oil to pan; swirl to coat. Combine tofu, pepper, and 2 teaspoons cornstarch in a medium bowl; toss to coat. Add tofu to pan; stir-fry 8 minutes, turning to brown on all sides. Remove tofu from pan with a slotted spoon; place in a medium bowl. Add onions, garlic, and ginger to pan; stir-fry 1 minute. Remove from pan; add to tofu.
3. Add remaining 1 1/2 teaspoons canola oil to pan; swirl to coat. Add bok choy; stir-fry 3 minutes. Add carrots; stir-fry 2 minutes. Add snow peas; stir-fry 1 minute. Add Shaoxing; cook 30 seconds, stirring constantly. Stir in tofu mixture.
4. Combine remaining 1 1/2 teaspoons cornstarch, broth, and remaining ingredients in a small bowl, stirring with a whisk. Add broth mixture to pan; cook until slightly thickened (about 1 minute).
MyRecipes is working with Let's Move!, the Partnership for a Healthier America, and USDA's MyPlate to give anyone looking for healthier options access to a trove of recipes that will help them create healthy, tasty plates. For more information about creating a healthy plate, visit www.choosemyplate.gov.