Preheat oven to 400º. Dredge cauliflower in flour, milk, and bread crumbs and transfer to a baking sheet lined with a rack or a parchment paper. Season with 1 tablespoon salt, and pepper to taste.
Bake until deeply golden and crispy, 20 to 30 minutes.
Meanwhile, make sauce: In a small saucepan over low heat, heat oil. Add garlic and ginger and cook until fragrant and softened, 2 minutes, then add sweet chili sauce, soy sauce, and lime juice. Simmer 5 minutes until thickened.
Transfer cauliflower to a large bowl and add sauce. Toss gently until completely coated.
Serve over rice with sesame seeds and green onions.
