Definitely! The options for pierogi fillings are virtually endless! While potato and cheese is a classic favorite, sauerkraut and mushrooms are also popular choices. Keep in mind that if you plan to use any veggies, they should first be finely chopped, seasoned, and sautéed. You can also get creative with the cheese and swap out cottage cheese for cheddar or ricotta. If you're comfortable improvising, go for it, but if you feel more confident following a recipe, just do a quick search online for pierogi fillings.