Vegan Wellington

Name: Vegan Wellington
Prep time: 20 min
Cook time: 50 min
Total time: 1 h 10 min
Cuisine: European, British
Ingredients: 1 frozen puff pastry sheet; 1 large carrot (peeled and chopped); 1 large celery stalk (chopped); 2 tsp vegan butter or oil (or 1/4 cup veg stock); 2/3 cup dry lentils (green or brown); 2 cups water; 2 tsp vegan Worcestershire sauce (see notes); 1.5 tsp vegetable or "no beef" bouillon (see notes); 1.5 tsp garlic powder; 1 tsp onion powder; 1/2 tsp paprika; 1/2 tsp sage; 1/2 tsp thyme; 1/4 tsp black pepper; soy sauce or salt to taste; 2 cups chopped kale (loosely packed); 1/2 cup roasted unsalted sunflower seeds (coarsely chopped); 1/4 cup panko breadcrumbs; 2 tbsp non-dairy milk