Vegan Mushroom French Dip Sandwiches

• Meanwhile, heat a large drizzle of oil in a large pan over medium-high heat. Add mushrooms; season with salt and pepper. Cook, stirring, until lightly browned, 4-5 minutes. TIP: Lower heat and add a splash of water if mushrooms begin to brown too quickly. • Add onion and another drizzle of oil; season with half the thyme (all for 4 servings) and a pinch of salt and pepper. Cook, stirring, until veggies are browned and tender, 5-7 minutes. • Turn off heat; transfer to a plate and cover to keep warm. Wipe out pan.

• Heat a drizzle of olive oil in same pan over medium heat. Add stock concentrates, half the garlic powder, and ¼ cup water (1⁄3 cup for 4 servings); cook, stirring occasionally, until slightly reduced, 2-3 minutes.

• Halve baguette lengthwise and place baguette halves directly on oven rack. Toast until golden brown. • In a small bowl, combine vegan mayo and remaining garlic powder. Season aioli with salt and pepper to taste.

• Spread a thin layer of aioli over cut sides of toasted baguette halves (save any remaining aioli for serving). Using tongs or a slotted spoon, fill baguette halves with mushroom mixture; top with arugula. Close sandwiches and cut in half.