Vegan Hearty Stew with Potatoes, Carrots & Mushrooms Ingredients 2 tbsp olive oil 1 large onion, diced 4 garlic cloves, minced 3 carrots, cut into large chunks 3 cups baby potatoes (mix of red and gold), halved if large 2 cups mushrooms, halved (cremini or button) 2 cups seitan chunks or soy curls (optional, for meaty texture) 2 tbsp tomato paste 2 tbsp soy sauce or tamari 1 tbsp balsamic vinegar (or red wine for depth) 4 cups vegetable broth 1 ½ tbsp cornstarch mixed with 3 tbsp water (slurry f