Quick and Flavorful Veggie Udon Stir Fry

Ingredients

• 1/4 cup soy sauce
• 2 tablespoons vegetarian oyster sauce
• 1 tablespoon mirin
• 2 cloves garlic, finely grated
• 1 tablespoon toasted sesame oil
• 2 bell peppers, thinly sliced (about 2 cups)
• 1 large carrot, peeled and thinly sliced on the bias (about 1 1/4 cups)
• 1 small white onion, thinly sliced (about 1 cup)
• 3 blocks (8.81 oz each) frozen precooked udon noodles
• 4 cups shredded napa cabbage
• 1 cup water
• Sliced scallions, for garnish