Well, yes and no! While sour cream is a classic topping for baked potatoes, it's also an incredibly versatile ingredient. You can use it as a base for sauces, a marinade for meats, or even as a substitute for buttermilk in recipes.
In many recipes, you can substitute sour cream for yogurt on a 1:1 ratio. This means that if a recipe calls for 1 cup of yogurt, you can use 1 cup of sour cream instead. Easy peasy, right? Just keep in mind that sour cream has a thicker consistency than yogurt, so you may need to adjust the liquid content of your recipe.
One of the best things about using sour cream as a yogurt substitute is that it adds a depth of flavor that's hard to replicate with yogurt. It's especially great in baked goods, like muffins, cakes, and cookies. The tanginess of the sour cream helps to balance out the sweetness of the sugar, creating a beautiful flavor profile.
Greek Yogurt Sour Cream Substitute Recipe at Erin Patteson blog