My Go-To One Pot Vegetable Stew

Ingredients

• 2 tablespoons olive oil
• 1 onion (chopped)
• 2 (8-ounce) packages baby bella mushrooms (sliced )
• 3 carrots (sliced)
• 3 celery stalks (sliced)
• 3 garlic cloves (minced)
• 2 tablespoons fresh thyme leaves
• 1 ¼ teaspoon salt
• ½ teaspoon black pepper
• 1 tablespoon tomato paste
• ¼ cup all-purpose flour
• 1 (14.5 ounce) can fire roasted diced tomatoes
• 4 cups low sodium vegetable broth
• 3 medium yukon gold potatoes (cut into 1-inch pieces (about 1 ½ pounds))
• Parsley (chopped, for serving (optional))