Those sound lovely, Penny! But if you can avoid using garlic and herb Philly you will also cut out some carbs. Why not add your own garlic and herbs along with the cream?
Definitely substitute the shallots for onion in the turkey burgers.
Have you had a read of the recipe thread for some more inspiration?
Re vegetables - I often roast veg. Cauliflower is lovely like this - break it up into florets, put into a baking dish, drizzle generously with olive oil, then season with sea salt, freshly ground black pepper, ground cumin and, if you like, chilli flakes. Roast for around 20 minutes until tender and just starting to char.
Broccoli and leeks I sometimes pan fry, with sliced shallots in olive oil, salt and pepper and again, occasionally, chilli or chilli flakes. (I love chilli so often add them to my food!)
If you do the leeks like this, they are also lovely with a dollop of cream and a handful of grated cheese added in.
Do you like fennel? Slice a large bulb into quarters, length-wise, and parboil for about 5 minutes until just starting to go tender. Then braise slowly in a frying pan with lots of butter till cooked. Then turn up the heat a little until it starts to brown. Just before serving, squeeze some lemon juice over it.
Celeriac is a lovely veg, and very low carb. I generally make a mash out of this, either on its own, or with cauliflower. Also lovely with some boiled leeks added to it.