Butternut Squash Casserole With Rice & Ground Beef
Butternut Beef Casserole is a cozy oven-baked dinner made with sweet butternut squash, seasoned ground beef, tender rice, tomatoes, herbs, and plenty of melted cheese. It is hearty enough for family dinners, practical for meal prep, and perfect for cooler evenings when you want something warm and filling. Butternut Beef Casserole brings together savory beef, naturally sweet squash, and fluffy rice in one comforting dish that is easy to serve.
Prep Time: 25 minutes
Cook Time: 40 minutes
Total Time: About 1 hour 5 minutes
Servings: 6
Ingredients
For the Casserole
- 1 1/2 pounds lean ground beef
- 3 cups peeled and cubed butternut squash
- 2 cups cooked rice
- 1 medium yellow onion, diced
- 3 garlic cloves, minced
- 1 tablespoon olive oil
- 1 can (14.5 ounces) diced tomatoes, drained
- 1/2 cup tomato sauce
- 1 teaspoon smoked paprika
- 1 teaspoon Italian seasoning
- 1/2 teaspoon dried thyme
- 1/2 teaspoon ground cumin
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1/4 teaspoon red pepper flakes, optional
- 1 cup shredded mozzarella cheese
- 1/2 cup shredded cheddar cheese
- 1/4 cup grated Parmesan cheese
- 2 tablespoons chopped parsley
Optional Add-Ins
- 1 cup baby spinach
- 1/2 cup sliced mushrooms
- 1/2 cup corn
- 1/2 cup chopped bell pepper
Why You’ll Love This Recipe
Butternut Beef Casserole is a full meal in one baking dish, which means you do not need several sides to make dinner feel complete. The ground beef adds savory flavor, the squash adds sweetness and color, and the rice helps make every serving hearty and satisfying.
Another reason to love this recipe is how flexible it is. You can use white rice, brown rice, or even wild rice, and you can add vegetables such as spinach, mushrooms, corn, or bell peppers. It is also easy to assemble ahead and bake later.
How to Make Butternut Beef Casserole
Step 1: Preheat the Oven
Preheat the oven to 375°F or 190°C.
Lightly grease a 9-by-13-inch baking dish with olive oil or cooking spray.
Step 2: Prepare the Squash
Peel the butternut squash, remove the seeds, and cut the flesh into small 1-inch cubes.
Place the cubes in a microwave-safe bowl with 2 tablespoons water. Cover loosely and microwave for 4 to 5 minutes, just until slightly tender.
Drain well.
This quick pre-cooking step helps Butternut Beef Casserole bake evenly without leaving the squash too firm.
Step 3: Brown the Ground Beef
Heat olive oil in a large skillet over medium-high heat.
Add the ground beef and break it into small pieces with a wooden spoon or spatula.
Cook for 6 to 8 minutes, or until browned and fully cooked.
Drain excess grease if necessary.
Step 4: Add Onion and Garlic
Add the diced onion to the skillet.
Cook for 3 to 4 minutes, stirring occasionally, until softened.
Add the garlic and cook for about 30 seconds until fragrant.
Step 5: Season the Beef
Stir in smoked paprika, Italian seasoning, thyme, cumin, salt, black pepper, and optional red pepper flakes.
Cook for another minute so the spices coat the beef and become fragrant.
Step 6: Add Tomatoes
Stir in the drained diced tomatoes and tomato sauce.
Simmer for 2 to 3 minutes.
The tomato mixture adds moisture and helps tie the beef, rice, and squash together.
Step 7: Combine the Casserole
In a large bowl, combine the cooked rice, partially cooked squash, and seasoned beef mixture.
Add half of the mozzarella and half of the cheddar.
Stir gently until everything is evenly distributed.
The mixture for Butternut Beef Casserole should look moist but not soupy.
Step 8: Transfer to the Baking Dish
Spoon the mixture into the prepared casserole dish.
Spread it into an even layer with a spatula.
Step 9: Add the Cheese Topping
Sprinkle the remaining mozzarella, cheddar, and Parmesan evenly over the top.
The cheese will melt and create a golden, savory finish.
Step 10: Bake
Cover loosely with foil and bake for 20 minutes.
Remove the foil and bake for another 15 to 20 minutes, or until the casserole is hot throughout and the cheese is melted and lightly golden.
Step 11: Rest
Remove Butternut Beef Casserole from the oven and let it rest for 5 to 10 minutes.
This helps the layers settle and makes the casserole easier to scoop and serve.
Step 12: Garnish and Serve
Sprinkle with chopped parsley and extra black pepper if desired.
Serve warm.
Serving Suggestions
Butternut Beef Casserole is filling enough to serve as a complete dinner.
Pair Butternut Beef Casserole with a simple green salad, roasted broccoli, garlic green beans, or steamed vegetables for a balanced meal.
Crusty bread, dinner rolls, or a light tomato cucumber salad also work well alongside it.
For a cozy fall meal, serve it with roasted Brussels sprouts or a warm vegetable soup.
For another cozy fall dinner, try our Pumpkin Gouda Stuffed Shells with creamy pumpkin, ricotta, Gouda, Parmesan, brown butter, and crispy sage.
Recipe Tips
Use lean ground beef so the casserole does not become overly greasy.
Cut the butternut squash into evenly sized cubes so it cooks at the same rate.
Pre-cook the squash slightly before assembling the casserole.
Use cooked rice rather than uncooked rice because the recipe does not contain enough extra liquid to cook raw rice properly in the oven.
For the best Butternut Beef Casserole texture, let the casserole rest for several minutes before serving.
Do not overcook the squash during the microwave step, or it may become mushy after baking.
Taste the beef mixture before combining it with the rice and adjust the seasoning if needed.
Easy Variations
Butternut Beef Casserole is easy to customize depending on what you already have in the kitchen.
For extra vegetables, add spinach, mushrooms, corn, peas, or chopped bell peppers.
You can make Butternut Beef Casserole with ground turkey or ground chicken instead of beef.
For a slightly smoky flavor, use smoked Gouda in place of some of the cheddar.
Brown rice or wild rice can replace white rice, although their texture will be firmer.
For extra heat, add chopped jalapeño, chili flakes, or a small amount of hot sauce.
You may also enjoy our Key Lime Pie–Inspired Low-Carb Dessert for a cool, creamy, no-bake treat with bright lime flavor and a lighter low-sugar approach.
Make-Ahead Instructions
This casserole is excellent for meal prep.
Assemble Butternut Beef Casserole completely, cover tightly, and refrigerate for up to 24 hours before baking.
When ready to cook, let the dish sit at room temperature while the oven preheats.
Add about 5 to 10 minutes to the covered baking time if the casserole is still very cold.
Storage and Reheating
Store leftover Butternut Beef Casserole in an airtight container in the refrigerator for up to 4 days.
Reheat individual portions in the microwave or warm a larger amount in a covered baking dish at 350°F or 175°C until hot.
If the casserole seems dry after refrigeration, add a small spoonful of broth or tomato sauce before reheating.
The casserole can also be frozen for up to 2 months.
Cool completely, wrap tightly, and thaw overnight in the refrigerator before reheating.
Nutrition Information
Approximate nutrition per serving:
Calories: 520
Protein: 31 g
Carbohydrates: 48 g
Fat: 23 g
Saturated Fat: 10 g
Fiber: 5 g
Sugar: 7 g
Sodium: 720 mg
Nutrition values are estimates and may vary depending on the beef, rice, cheeses, squash, and serving size.
Frequently Asked Questions
Can I use frozen butternut squash?
Yes. Thaw it first and pat it dry so excess moisture does not make the casserole watery.
Can I use brown rice?
Yes. Brown rice works well and adds a slightly nuttier flavor and firmer texture.
Can I make Butternut Beef Casserole ahead?
Yes. Assemble it up to one day in advance, cover, refrigerate, and bake when needed.
Can I use ground turkey?
Yes. Ground turkey or chicken can replace the ground beef.
Why is my casserole watery?
The squash or tomatoes may have contained too much liquid. Drain the tomatoes well and avoid overcooking the squash before baking.
Can I freeze it?
Yes. Cool the baked casserole completely, wrap well, and freeze for up to 2 months.
Can I add more cheese?
Yes. Add extra mozzarella, cheddar, Parmesan, or Gouda according to your preference.
Final Thoughts
Butternut Beef Casserole is a comforting way to combine sweet squash, savory beef, rice, tomatoes, herbs, and melted cheese in one easy dinner.
Because Butternut Beef Casserole includes protein, vegetables, grains, and cheese in one dish, it works especially well for family meals and make-ahead dinners.
Keep this Butternut Beef Casserole recipe handy for cool evenings, busy weekdays, meal prep, or anytime you need a hearty casserole without complicated preparation.
With tender squash, seasoned beef, fluffy rice, tomato flavor, and a golden cheese topping, Butternut Beef Casserole delivers a warm, satisfying meal that is easy to make and simple to serve.