Step 1

Preheat oven to 425 degrees and grease a baking sheet. Combine cauliflower and oil in a large ziplock bag. Seal and shake to coat cauliflower in the oil. Open the bag, add corn starch, seal bag and toss to coat again.

Step 2

Transfer coated cauliflower to greased pan. Bake for 15-20 minutes until cauliflower starts to brown on the bottoms. Switch oven to broil and cook on high for 3-4 minutes just until tops start to brown. (watch carefully so the cauliflower doesn't burn!)

Step 3

While cauliflower is cooking, prepare the sauce: Add sugar, vinegar, soy sauce, garlic powder, onion salt, and ketchup to a medium sauce pan. Stir and bring to a boil. In a small bowl whisk together the 1 tablespoon corn starch and cold water until dissolved. Add to sauce pan and stir until thickened, then reduce to low heat.

Step 4

In a large heat-safe bowl combine roasted cauliflower and sauce. Serve with steamed rice and top with sliced green onions.