Spelt Sweet Potato and Lentil Pie

Ingredients

• 250 g, Wholegrain Spelt Flour
• 125 g, Cold Unsalted Butter, cubed
• 1 Medium , Egg
• 2 tbsp, 2–3 Cold Water
• 1 tbsp, Olive Oil
• 2 cloves, Garlic
• 1 tsp, Ground Cumin
• 1 tsp, Smoked Paprika
• 1 tsp, Dried Thyme
• 300 g, Sweet Potato, peeled and diced
• 400 g, Cooked Green or Brown Lentils
• 1 tbsp, Tomato Purée
• 150 ml, Vegetable Stock
• Salt and Black Pepper
• 1 Egg, , beaten