Soy-Glazed Soba Noodles with Flank Steak and Vegetables | Share the Pasta

Ingredients

• 6 oz. soba noodles (100% buckwheat is gluten-free pasta)
• 2 Tbsp. cornstarch
• ¼ cup sugar
• ¼ cup low-sodium soy sauce (or tamari sauce for gluten-free)
• 3 Tbsp. rice wine vinegar
• 2 Tbsp. sesame oil
• 1 Tbsp. sriracha sauce
• 2 Tbsp. grated ginger
• 1 Tbsp. vegetable oil (divided)
• 8 oz. flank steak
• 1 cup sliced onion
• 1 cup julienned red pepper
• 2/3 cup shelled edamame
• 8 cups chopped spinach leaves