Syn Free Beef and Vegetable Casserole (Oven, Slow Cooker, Instant Pot)

red bell pepper, chopped

small onion, finely chopped

salt and black pepper

spray oil

tomato paste (puree)

lean stewing beef (all visible fat removed)

large red onion, chopped

garlic cloves crushed

stalk of celery, chopped

cumin seeds

mustard seeds

dried thyme leaves

large carrots, chopped

(90z) of butternut squash, chopped

(480ml) of beef stock

tbs of balsamic vinegar

salt and black pepper

Spray oil