Spicy Stir-Fry Tacos

Ingredients (for 4 servings)

• 1 whole — butternut squash
• 8 oz — button mushrooms
• 2 cup — broccoli florets
• 1 cup — carrots
• 2 tbsp — cornstarch
• 5 tsp — tamari or soy sauce
• 6 clove — garlic
• 1 tbsp — ginger
• 2 tsp — unseasoned rice vinegar
• 1 tsp — red pepper
• 4 cup — Swiss chard
• 24 whole — 6-inch white corn tortillas
• 0.25 cup — scallions