Dinner Recipes

Ground Beef and Mushroom Gravy Casserole

By Clara ·
November 1, 2026

The beef browns in the skillet, then the mushrooms soften and pick up those savory bits left behind. Once the broth thickens around them, the whole kitchen smells like the best part of a beef-and-noodles dinner. That’s the point where this Ground Beef and Mushroom Gravy Casserole starts to come together: a generous pan of noodles tucked into a rich mushroom gravy, finished with melted cheddar.

I build the gravy right in the skillet, so the onion, mushrooms, and browned beef all become part of the sauce instead of getting lost in a separate layer. The noodles go in a little undercooked, and the casserole bakes covered before the cheese gets its turn uncovered. You get tender noodles, a bubbling edge of gravy, and a cheddar top that melts without drying out. Let it rest before serving; the gravy settles into the noodles, and each scoop holds together beautifully.

Why This Casserole Needs a Properly Thickened Gravy

Before the noodles go into the baking dish, the skillet should hold a gravy that’s already thickened on the stove. That matters because the oven isn’t where the sauce gets built; it’s where the flavors finish coming together. If the broth still looks watery when you take the skillet off the heat, the finished casserole can feel loose instead of coated and cohesive.

The flour needs a minute in the skillet with the garlic before any broth goes in. Then add the broth gradually, stirring as you pour, so it blends smoothly into the beef and vegetables rather than leaving little floury clumps. A short simmer gives the flour time to thicken the liquid. You’re looking for gravy that clings to the mushrooms and beef, with no thin puddle collecting in the bottom of the skillet.

Sour cream goes in after the skillet leaves the heat. That small change in timing helps it blend into the gravy without being exposed to a hard boil. Once the noodles are folded in, the sauce should look generous and creamy; it will continue to thicken as the casserole bakes and rests.

How the Beef, Cremini Mushrooms, and Broth Build the Gravy

• Ground beef — The 85% lean beef brings enough fat for browning without leaving the gravy overly greasy. If the skillet has a noticeable pool of fat after browning, drain off the excess before adding the vegetables.
• Cremini mushrooms — They bring an earthy, savory depth that makes the gravy taste fuller. Choose firm mushrooms with dry, smooth surfaces; white button mushrooms are the closest substitute and can be sliced and cooked the same way.
• Yellow onion and garlic — The onion softens into the gravy’s savory base, while garlic adds a sharper note. Fresh garlic is worth using here because it cooks briefly and its aroma comes through clearly.
• Beef broth, flour, and Worcestershire sauce — The flour thickens the broth into a coating gravy, and Worcestershire adds a tangy, savory edge. A basic store-brand beef broth works well; the browned beef and mushrooms provide plenty of depth.
• Wide egg noodles — Their broad folds catch the gravy and make the casserole feel hearty in every bite. Any brand of wide egg noodles is fine; the useful detail is cooking them short of fully tender before they go into the oven.
• Full-fat sour cream and sharp cheddar — Full-fat sour cream gives the gravy a creamy finish, while sharp cheddar adds a more pronounced cheese flavor than mild cheddar. Shredding cheddar from a block gives you a smooth melt; pre-shredded cheese is convenient but may melt a little less evenly.

From Skillet Gravy to a Bubbling Cheddar Top

Get the Noodles and Baking Dish Ready

Heat the oven to 350°F and grease a 9×9-inch, 2.5-quart baking dish. Boil the wide egg noodles for two minutes less than the package directions, then drain them well. They should still have some firmness when you bite one; they’ll soften more in the oven. Keep the drained noodles nearby so they can go straight into the gravy.

Brown the Beef, Then Soften the Vegetables

Set a 12-inch skillet over medium-high heat and cook the ground beef, breaking it into small pieces as it browns. This takes 6 to 8 minutes; cook until the beef reaches 160°F, then drain excess fat if needed. Add the diced onion and sliced mushrooms to the same skillet. Stir occasionally for 6 to 8 minutes, until the onion is softened and the mushrooms are browned.

Turn the Skillet into Gravy

Stir in the minced garlic and flour, and cook for one minute so the flour is no longer raw. Gradually pour in the beef broth while stirring, then add the Worcestershire sauce, kosher salt, and black pepper. Bring the mixture to a simmer and stir for 4 to 6 minutes, until the gravy thickens. Pull the skillet off the heat before stirring in the sour cream, then fold in the drained noodles until they’re coated.

Bake Covered, Then Melt the Cheddar

Transfer the noodle mixture to the prepared dish and cover it tightly with foil. Bake for 15 minutes, then remove the foil and sprinkle the shredded cheddar over the top. Return the dish to the oven for 8 to 10 minutes, until the cheese has melted and the gravy bubbles around the edges. Rest the casserole for 10 minutes before serving so the sauce settles around the noodles.

Easy Ways to Adapt This Beef and Mushroom Casserole

Questions That Come Up When Making This Casserole

Ground Beef and Mushroom Gravy Casserole

Ground beef and mushroom gravy casserole combines tender egg noodles, browned cremini mushrooms, and a savory sour cream gravy. Baked under foil and finished with sharp cheddar, it comes out bubbling at the edges with melted cheese on top.

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Prep Time 15 minutes mins

Cook Time 44 minutes mins

Resting 10 minutes mins

Total Time 1 hour hr 9 minutes mins

Servings: 6 servings

Course: Dinner

Cuisine: American

Calories: 650

Ingredients Equipment Method Notes

Ingredients

  

• 8 oz egg noodles wide
• 1 lb ground beef 85% lean
• 1 yellow onion medium, diced
• 8 oz cremini mushrooms sliced
• 2 cloves garlic minced
• 2 tbsp all-purpose flour
• 2 cups beef broth
• 1 tbsp Worcestershire sauce
• 0.5 tsp kosher salt
• 0.25 tsp black pepper
• 0.5 cup sour cream full-fat
• 1 cup sharp cheddar cheese shredded

Equipment

• 1 9x9-inch (2.5-quart) baking dish
• 1 12-inch skillet

Method

 

1. Heat the oven to 350°F.
2. Grease a 9x9-inch (2.5-quart) baking dish.
3. Cook the egg noodles in a large pot of boiling water for 2 minutes less than the package directions, then drain.
4. In a 12-inch skillet over medium-high heat, cook the ground beef, breaking it into small pieces, until browned and it reaches 160°F, 6 to 8 minutes; drain excess fat if needed.
5. Add the onion and mushrooms and cook, stirring occasionally, until the onion is softened and the mushrooms are browned, 6 to 8 minutes.
6. Stir in the garlic and flour and cook for 1 minute.
7. Gradually stir in the beef broth, then add the Worcestershire sauce, salt, and pepper; bring to a simmer and cook, stirring, until the gravy thickens, 4 to 6 minutes.
8. Remove the skillet from the heat and stir in the sour cream.
9. Fold in the drained noodles.
10. Transfer the mixture to the prepared baking dish and cover tightly with foil.
11. Bake for 15 minutes; uncover, sprinkle with the cheddar, and bake until the cheese is melted and the gravy bubbles at the edges, 8 to 10 minutes.
12. Rest the casserole for 10 minutes before serving.

Notes

For the thickest gravy, stir in the broth gradually. Refrigerate leftovers for 3 to 4 days; freezer-friendly. For a gluten-free variation, use gluten-free egg noodles and a gluten-free flour blend.