It's really easy to change most recipes to low fat ones. Replace all cheeses with non-fat or 2%, use ground turkey instead of beef, stock up on 100 calorie packs for snacks, keep fruits out on the counter so you see them and choose them for snacks.
My favorite low fat dessert is make some sugar free jello and get some frozen fruits (strawberries and blueberries are good) and some fat free whipped cream. Layer jello, fruit and whipped cream in parfait glasses. You can even add some low fat granola for crunch. So good and very low in calories and fat.
Stir fry is an easy way to get in veggies and keep fat out. Also, the healthy choice Campbells cream of (broccoli, chicken, cheese) combined with some grilled chicken breast is very healthy with some brown rice.
You really have to explore your grocery store and not speed through only getting what's typically on your list.
Congrats for making a lifestyle change! I am working on sticking to one myself!