Slow cooker vegetable lasagne - Cooking like a Boss

I'm not one for vegetable lasagne but this is actually really nice. Double, quadruple or more the mozzarella for more mozzarella.

sliced aubergine
2 ¹⁄₂ large aubergine	sliced into disks

veg mixture
5 onions	sliced	fry for 5 min until softened	stir cover and cook for 5 mins
5 cloves garlic	chopped
2 ¹⁄₂ tbsp 0.037 l 37 ¹⁄₂ ml 7 ¹⁄₂ tsp 0.159 cup 0.066 pint oil
5 large courgettes	diced
2 ¹⁄₂ red pepper	deseeded and roughly sliced
2 ¹⁄₂ yellow pepper	deseeded and roughly sliced
1000g 1kg 2.2lb 35.3oz chopped tomatoes
5 tbsp 0.075 l 75 ml 15 tsp 0.317 cup 0.132 pint tomato puree
5 vegetable stock cubes	finely chopped
3.75 tsp 0.019 l 18.8 ml 1.25 tbsp 0.079 cup 0.033 pint dried basil

¹⁄₂ of the sliced aubergine	layer (bottom to top)	cook on high for 2.5 - 3 hours	scatter on top and leave 10 minutes to melt
7 ¹⁄₂ lasagne sheets
¹⁄₃ of the veg mixture
remaining sliced aubergine
7 ¹⁄₂ lasagne sheets
remaining veg mixture
625g ⁵⁄₈kg 1.38lb 22oz mozzarella	chopped