This keto beef and fennel casserole has a rich tomato and balsamic sauce and is complemented by aromatic fennel. Perfect served alongside a portion of cauliflower rice or with keto bread for dipping!This makes for a great batch cooking option - perfect for freezing for future meals.
Add the olive oil to a large casserole dish over a medium heat. Add the beef and cook until browned all over. Remove from the pan with a slotted spoon and set aside.
Add the onion, garlic and celery to the pan. Sweat gently until tender.
Add the fennel and thyme and stir well to combine. Cook for a further minute or two until fragrant.
Add the tomato purée and balsamic vinegar and stir well to coat the vegetables.
Return the beef to the pan and stir well.
Add the chopped tomatoes and stock and bring to a gentle boil.
Reduce to a simmer, cover and cook gently for an hour.
Uncover and simmer for a further 10 minutes. Discard thyme stalks to serve.