There is quite a bit of fat in things such as meat, dairy, and Atkins bars.
If your goal is to gain weight you might add more pasta to your diet. Also keep in mind that you want to make sure to have healthy fat. What do you need the fat for? It’s to break down into sugars and energy. You can therefore look into foods that achieve the same result through a different process.
If your goal is to build muscle, you might look into making your own protein shakes or perhaps buying protein bars.
Being healthy can be expensive haha..