Aubergine and Borlotti Parmigiana

Ingredients

• 3 medium aubergines
• 1 white onion
• 1 clove garlic
• 400 g chopped tomatoes (tin)
• 400 g borlotti beans (tin)
• 1 tsp mixed herbs
• 80 g butter (or plant based alternative)
• 60 g plain flour
• 200 ml oat milk
• 120 g cheese