Hi jenny,
i make many of my old recipes, I just cut out any starches. Being here in s. California, there are many mexican style dishes but I don't use tortillas, rice etc. The flavors are still the same. I would recommend buying a good low-carb cookbook and trying some of the recipes. Soups are really good if they aren't cream based or have pasta or rice in them.
For snack, I do eat nut butters (high in fats and calories) with celery or a small amount of apple slices. I also eat yogurt, cottage cheese, low fat cheeses, and nuts for snacks. I make smoothies with water, yogurt, a small amount of berries and whey protein powder in a blender. You never have to eat the same thing every day.
Actually, i'm trying to lose weight and it's difficult for me right now because i'm alway trying to keep my blood sugar level stable and I snack constantly. I don't gain weight either and I can't believe how much I do eat.
Hope that helps,
dj