Comfort Casseroles: Vegan Kale And Leek Bake

Ingredients

• 2 cups soy milk
• 1 cup vegetable stock
• 1/2 onion
• 3 garlic cloves
• Pinch fennel seeds
• 2 fresh bay leaves
• Pinch whole black peppercorns
• Handful chopped flat-leaf parsley
• 4 large leeks
• 5 1/2 tablespoons vegan butter
• olive oil
• 1 large bunch kale
• 1 teaspoon finely chopped thyme
• 2 1/2 tablespoons all-purpose flour
• 1/2 cup shredded vegan cheese
• 1 tablespoon Dijon mustard
• stale bread