Creamy Sweet Potato and Coconut Stew

Ingredients

• 1 tbsp olive oil
• 3 cloves garlic, minced
• 1-inch ginger, thinly sliced
• 1 white onion, thinly sliced
• 2 tsp ground cumin
• ½ tsp cinnamon
• ¼ tsp ground nutmeg
• ¼ tsp cayenne pepper
• 2 medium sweet potatoes, cut into chunks
• 150g, butternut squash chopped
• 1 can full-fat coconut milk
• 1 cup vegetable broth
• Pepper
• Salt
• 1 tbsp tahini
• Juice from ½ lemon
• A handful of chopped roasted cashew nuts, to serve