Simple French Onion Beef Casserole

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This Simple French Onion Beef Casserole is your new go-to comfort food for chilly evenings or busy weeknights. With a creamy base, savory ground beef, and a topping of golden crispy onions, it delivers the familiar flavors of French onion soup in a hearty, filling dish. It’s cozy, satisfying, and the kind of meal that brings everyone back for seconds.

The combination of tender egg noodles, seasoned beef, and a creamy mushroom sauce is irresistible. Plus, that crunch from the fried onions? Absolute perfection. This recipe takes minimal effort but tastes like you’ve been cooking all day. Whether you’re feeding a family or meal-prepping for the week, this casserole has you covered.

What Kind of Noodles Should I Use?

Wide egg noodles work best for this recipe because they hold up well under the creamy sauce and provide the right bite. They soak up the flavor beautifully while keeping a tender texture. However, you can substitute with rotini, fusilli, or even penne if that’s what you have on hand.

Ingredients for the Simple French Onion Beef Casserole

Ground Beef – The base of the casserole. Provides richness and heartiness. You can also use ground turkey or chicken if preferred.

Egg Noodles – These wide noodles hold sauce well and add the perfect soft bite.

Cream of Mushroom Soup – Adds creaminess and that savory umami flavor that ties everything together.

Sour Cream – Gives the sauce a little tang and richness.

French Fried Onions – The crunchy, flavorful topping that makes this dish shine.

Worcestershire Sauce – A splash adds depth and that classic umami punch.

Salt and Pepper – To season everything just right.

Shredded Cheese (Optional) – For extra gooeyness, cheddar or mozzarella work great.

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How To Make the Simple French Onion Beef Casserole

Step 1: Brown the Beef

In a large skillet over medium heat, cook the ground beef until it’s no longer pink. Season with salt and pepper. Drain any excess grease.

Step 2: Cook the Noodles

While the beef is browning, bring a pot of salted water to a boil and cook the egg noodles according to package instructions. Drain and set aside.

Step 3: Mix the Sauce

In a large mixing bowl, combine the cream of mushroom soup, sour cream, and Worcestershire sauce. Stir until well blended.

Step 4: Combine

Add the cooked beef and noodles to the bowl with the sauce. Stir gently until everything is well coated.

Step 5: Assemble the Casserole

Pour the mixture into a greased 9×13-inch baking dish. Spread evenly. If using cheese, sprinkle a layer over the top.

Step 6: Top and Bake

Sprinkle the French fried onions generously on top. Bake in a preheated oven at 350°F (175°C) for 25-30 minutes or until bubbly and golden.

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How to Serve and Store Simple French Onion Beef Casserole

Serve this casserole hot from the oven, garnished with fresh parsley if you’d like. It’s filling enough to stand alone, but pairs well with light sides.

To store leftovers, transfer to an airtight container and refrigerate for up to 4 days. Reheat in the oven or microwave until warm. For longer storage, freeze portions in freezer-safe containers for up to 2 months.

What to Serve With Simple French Onion Beef Casserole?

Roasted Green Beans

Their crisp texture and fresh flavor cut through the richness of the casserole.

Garlic Bread

Great for scooping up every last bit of creamy sauce.

Simple Green Salad

Adds a refreshing, light contrast with a vinaigrette dressing.

Steamed Broccoli

A nutritious, mild-tasting side that complements the flavors without overwhelming.

Apple Walnut Salad

Crunchy, sweet, and tangy—a perfect pairing.

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Want More Casserole Ideas?

If you love this French Onion Beef Casserole, you’ll definitely want to try these other comforting meals:

• Creamy Crockpot Crack Chicken when you need a no-fuss slow-cooked favorite.
• Hashbrown Chicken Casserole for a cheesy, golden twist.
• Chicken Crescent Roll Casserole that’s both flaky and creamy.
• Runza Casserole for a Midwestern classic reimagined.
• French Onion Beef Rice Casserole if you’re looking to change it up with rice instead of noodles.

Save This Pin For Later

Save this comforting dinner idea to your favorite Pinterest board so it’s easy to find the next time you need a satisfying family meal.

Tried it with your own spin? Maybe with extra mushrooms or a spicy cheese? I’d love to hear about your variations—drop your tips in the comments!

Need more inspiration? Explore my daily kitchen creations on Savor Queen on Pinterest. You never know what deliciousness you’ll find next.

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