Vegetarian Niku Dofu

Ingredients

• 1 block firm tofu, drained and cut into cubes
• 2 cups mixed vegetables (such as mushrooms, bell peppers, carrots, and snow peas)
• 1 onion, sliced
• 2 cloves garlic, minced
• 1 tablespoon oil
• 1 cup vegetable broth
• 2 tablespoons soy sauce
• 1 tablespoon mirin (Japanese sweet rice wine)
• 1 tablespoon sugar
• 1 teaspoon grated ginger
• 2 scallions, chopped
• Cooked rice, to serve