Sweet Potato & Beetroot Gratin

Ingredients

• vegetable oil, for oiling

• 2 sweet potatoes, peeled and sliced into 3mm rounds

• 200ml unsweetened almond milk

• 1 lemon, finely grated zest

• 2 garlic cloves, finely chopped

• 1 tspn dried rosemary

• ¼ tspn chilli flakes

• freshly ground black pepper

• sea salt flakes

• 250g ready cooked beetroot

• 2 tbsp nutritional yeast

• 1 handful grated non dairy cheese