Found this in my aunt's handwritten recipe box and now I understand why she was famous for it at every family reunion
This oven baked 5-ingredient sour cream noodle bake is exactly the kind of dish you’d expect to find in a well-worn, handwritten recipe box. It’s Midwestern to its core: comforting, a little indulgent, and designed to feed a crowd without a lot of fuss. The combination of egg noodles, seasoned ground beef, tangy sour cream, tomato sauce, and a generous blanket of melted cheese explains why a dish like this would become legendary at family reunions. It bakes up in a glass dish with bubbling edges, golden cheese, and those cozy, slightly imperfect layers that signal a true home-cooked casserole.
Serve this sour cream noodle bake hot, straight from the glass baking dish, with a simple green salad dressed in a bright vinaigrette to cut through the richness. Garlic bread or buttered dinner rolls are natural partners, especially if you like to scoop up any saucy bits left in the pan. A side of steamed green beans or roasted broccoli works well for balance, and if you’re pouring drinks, a light red wine or a cold lager fits the casual, family-style feel of this classic casserole.
Oven-Baked 5-Ingredient Sour Cream Noodle Bake
Servings: 6-8
Ingredients
12 oz wide egg noodles, uncooked 1 1/2 lb ground beef (80–90% lean) 24 oz jar tomato pasta sauce (about 3 cups), any basic marinara-style 2 cups full-fat sour cream 3 cups shredded mozzarella cheese, divided
Directions
Preheat your oven to 350°F (175°C). Lightly grease a 9x13-inch glass baking dish so the noodles don’t stick.
Bring a large pot of well-salted water to a boil. Add the egg noodles and cook just to al dente according to package directions, usually 6–8 minutes. Drain well so excess water doesn’t dilute the sauce.
While the noodles cook, heat a large skillet over medium-high heat. Add the ground beef and cook, breaking it up with a spatula, until it is fully browned and no pink remains, about 7–9 minutes. If there is a lot of fat in the pan, carefully spoon off most of it so the casserole doesn’t turn greasy.
Reduce the heat to medium and pour the tomato pasta sauce into the skillet with the browned beef. Stir well and let it simmer for 2–3 minutes so the flavors meld. Taste and adjust seasoning with a pinch of salt or pepper if your sauce is very plain, keeping in mind the cheese will add saltiness later.
In a large mixing bowl, combine the drained, still-warm egg noodles with the sour cream. Toss gently until every noodle is lightly coated and the mixture looks creamy and evenly combined.
Spoon the sour cream noodles into the prepared 9x13-inch glass baking dish, spreading them into an even layer that reaches all the corners.
Pour the beef and tomato sauce mixture evenly over the noodles. Use the back of a spoon to nudge the sauce into the noodles in a few spots so you get some pockets of meat and some pockets of tangy sour cream throughout, without completely mixing the layers.
Sprinkle 2 cups of the shredded mozzarella evenly over the top of the beef and noodles, making sure you reach the edges so they brown nicely. Reserve the remaining 1 cup for later.
Cover the baking dish loosely with foil, tenting it slightly so the cheese doesn’t stick. Bake in the preheated oven for 20 minutes to heat everything through.
Remove the foil and sprinkle the remaining 1 cup mozzarella over the top. Return the dish to the oven, uncovered, and bake for another 10–15 minutes, or until the cheese is fully melted, bubbling, and lightly golden in spots.
For the best slices and cleaner servings, let the casserole rest on a heatproof surface for about 10 minutes after baking. This allows the layers to set slightly while still staying hot and cheesy.
To serve, scoop generous portions with a large spoon, making sure to dig down so each serving includes creamy noodles, saucy beef, and plenty of that stretchy, browned cheese on top.
Variations & Tips
You can adapt this 5-ingredient base in several ways without losing its old-school charm. If you prefer a bit of heat, choose a spicy marinara or stir a spoonful of crushed red pepper into the sauce before baking. For a slightly lighter version, use light sour cream and a leaner ground beef (90–93% lean), but keep in mind that some fat is what gives the casserole its tender texture and flavor. You can also swap half of the ground beef for mild Italian sausage for a more robust, reunion-worthy flavor. If you need to make this ahead, assemble the casserole completely, cover tightly, and refrigerate for up to 24 hours; add 5–10 extra minutes to the covered baking time to ensure it heats through. Leftovers reheat well in the oven, covered with foil at 325°F until hot, or in the microwave in short bursts, stirring in between to keep the noodles from drying out. For food safety, cook the ground beef until it is no longer pink and reaches an internal temperature of 160°F, and refrigerate any leftovers within 2 hours of baking. Use refrigerated leftovers within 3–4 days and reheat until steaming hot before serving.
