1 (8-ounce) package egg noodles
1/4 cup butter
1/2 cup sour cream
1/2 cup Ranch dressing
1/2 cup grated Parmesan cheese
Cook egg noodles according to package directions; drain and return to pot. Stir in butter and remaining ingredients. Serve immediately.
Note: We substituted 1 (8-ounce) package of thin spaghetti for the egg noodles and added chopped cooked ham and steamed broccoli. Sautéing the ham in a lightly greased skillet over medium-high heat gives it a crisp and smoky bacon-like flavor.