I find paleo cookbooks and websites frequently helpful with inspiration for meals and the occasional recipe, since they make avoidance of grains (and dairy) a general principle.

Since I 'only' have two dietary problems: lactose intolerance and the dreaded gluten, there are often many recipes I can use without any changes or editing. They might be less helpful for others, depending on your own dietary restrictions, but it doesn't hurt to take a look.

And for a specific website I love Stephanie at A Year of Slow Cooking because she also loves her crockpot! https://www.ayearofslowcooking.com/