There’s something incredibly satisfying about a warm, cheesy casserole fresh out of the oven, especially on a busy weeknight. Picture it: as I open the oven door, the delightful aroma of melted cheddar mingling with zesty tomatoes envelops my kitchen, instantly transforming it into a cozy haven. That’s the magic of this Cheesy Keto Ground Beef Casserole with Tomatoes—a dish that not only pleases the senses but also embraces a low-carb lifestyle without sacrificing flavor.
When I first whipped this up, I was looking for a quick yet fulfilling dinner option that my whole family would love. Thanks to just a handful of ingredients and minimal prep time, it quickly became a weeknight staple. Whether you’re watching your carbs, tired of takeout, or just on the hunt for a crowd-pleasing meal, this casserole hits all the right notes. So grab your ground beef and let’s turn dinner into something memorable!
Why is Cheesy Keto Ground Beef Casserole with Tomatoes irresistible?
Quick to Make: With just 25 minutes from start to finish, this casserole is perfect for busy weeknights.
Comforting Flavor: The crispy, gooey cheese pairs beautifully with zesty tomatoes, creating a warm and filling dish your family will love.
Low-Carb Goodness: This recipe keeps your carb count low while maintaining high flavor, making it great for those following a keto lifestyle.
One-Pan Convenience: Less cleanup is always a win! Just mix, bake, and enjoy this delightful dish straight from the oven.
Versatile Dish: Easy to customize with your favorite add-ins or spices, this casserole suits all taste buds! If you’re in the mood for more low-carb options, be sure to check out our Keto Casserole Recipes.
Cheesy Keto Ground Beef Casserole Ingredients
For the Casserole
• RO*TEL® Diced Tomatoes & Green Chiles – a zesty base that adds flavor and moisture to your Cheesy Keto Ground Beef Casserole with Tomatoes.
• Ground Beef – provides a hearty protein source, ensuring everyone stays satisfied after dinner.
• Chili Powder – adds a warm kick; adjust to your spice preference for a milder or spicier dish.
• Cumin – enhances the overall flavor profile with its earthy richness, making your casserole truly stand out.
• Garlic Powder – for that unmistakable, savory aroma that makes your kitchen feel like home.
• Salt – balances the flavors; remember to taste and adjust as needed for your perfect dish!
For the Topping
• Sour Cream – adds creaminess and tang that complements the bold flavors of the casserole.
• Shredded Cheddar Cheese – melts beautifully on top, creating an irresistible golden layer that beckons from the oven!
How to Make Cheesy Keto Ground Beef Casserole with Tomatoes
-
Preheat your oven to 350°F. This sets the stage for your delicious casserole, ensuring it bakes evenly and melts the cheese to perfection.
-
Combine ingredients in a pan. In a large skillet over medium-high heat, add one can of drained RO*TEL®, ground beef, chili powder, cumin, garlic powder, and salt.
-
Cook until browned. Stir the mixture frequently until the beef is cooked through and no longer pink, allowing all the flavors to meld together beautifully.
-
Transfer to a casserole dish. Once the beef is ready, pour the mixture into an 8×8” casserole dish, creating a hearty base for your cheesy topping.
-
Mix sour cream and remaining ROTEL®. In a small bowl, combine the drained half can of ROTEL® with sour cream and mix until well blended. Spread this over the beef layer.
-
Sprinkle the cheddar cheese. Generously top the sour cream mixture with shredded cheddar cheese, making sure every corner is covered for that cheesy goodness.
-
Bake until melty. Place the casserole dish in the preheated oven and bake for 7-10 minutes, or until the cheese is completely melted and bubbly.
-
Serve hot! Once done, take it out of the oven and let it cool slightly before serving. Don’t forget to season with additional salt to taste!
Optional: Garnish with fresh herbs or sliced jalapeños for an extra kick.
Exact quantities are listed in the recipe card below.
What to Serve with Cheesy Keto Ground Beef Casserole with Tomatoes?
Transform your dinner into a delightful feast with these perfect pairings that enhance every bite of your comforting casserole.
- Garlic Green Beans: The crispiness of sautéed green beans seasoned with garlic provides a fresh, crunchy contrast to the rich, cheesy casserole.
- Creamy Cauliflower Mash: This low-carb alternative to mashed potatoes brings a velvety texture that complements the hearty beef and tomatoes beautifully. Its buttery taste pairs seamlessly with the casserole.
- Simple Garden Salad: A light and refreshing salad with mixed greens, cucumbers, and a zesty vinaigrette balances the comforting richness of the casserole. Plus, the crunch adds a lovely texture!
- Avocado Slices: Creamy avocado slices drizzled with lime juice add a refreshing touch that enhances the flavors of your dish while providing healthy fats.
- Spicy Pickles: A side of spicy pickles introduces a tangy crunch that contrasts the richness of the casserole, making each bite even more exciting.
- Chilled White Wine: A glass of crisp white wine, like Sauvignon Blanc, complements the zesty flavors in the casserole, making your meal feel special and indulgent.
- Sugar-Free Chocolate Mousse: End your meal on a sweet note with this rich dessert. Its smooth texture and deep chocolate flavor create a delightful finish after the savory casserole.
- Crispy Parmesan Zucchini Fries: Oven-baked zucchini fries sprinkled with parmesan provide a tasty and low-carb side that feels indulgent while keeping things light.
- Herbed Quinoa: This nutty and fluffy grain, tossed with fresh herbs, works well to soak up the delicious juices from the casserole, making every bite scrumptious.
With these delightful options, dinner is sure to be a hit!
Expert Tips for Cheesy Keto Ground Beef Casserole with Tomatoes
• Quality Beef: Use 80/20 ground beef for a perfect balance of flavor and moisture. Leaner cuts might make your dish dry.
• Spice It Up: Customize the spice level by adjusting the chili powder. Taste as you go to find your perfect balance.
• Don’t Rush Baking: Allow the casserole to bake until the cheese is beautifully melted and just beginning to bubble. This enhances the deliciousness of your Cheesy Keto Ground Beef Casserole with Tomatoes.
• Creative Add-Ins: Feel free to add your favorite vegetables like bell peppers or zucchini for extra nutrients and flavor diversity.
• Make Ahead: Prepare the casserole in advance and store it in the refrigerator. Just bake it when you’re ready to eat!
Make Ahead Options
These Cheesy Keto Ground Beef Casseroles with Tomatoes are perfect for meal prep! You can prepare the beef mixture and layer it in the casserole dish up to 24 hours in advance, storing it covered in the refrigerator. To maintain the quality, keep the cheese and sour cream topping separate until you’re ready to bake. When you’re ready to serve, simply spread the sour cream mixture over the meat, add the shredded cheddar cheese on top, and place it in a preheated oven. Bake for 7-10 minutes until the cheese is melted and bubbly. This way, you’ll transform your weeknight dinners into quick and satisfying meals with minimal effort!
Cheesy Keto Ground Beef Casserole Variations
Feel free to let your creativity shine by adding your personal twist to this comforting dish!
-
Vegetarian: Substitute ground beef with lentils or black beans for a satisfying plant-based option. Both add hearty texture and protein without meat.
-
Spicy Kick: Add diced jalapeños or a splash of hot sauce to the beef mixture for an extra layer of heat that will delight spicy food lovers. The combination of flavors will be unforgettable!
-
Dairy-Free: Use a plant-based sour cream and cheese alternative to keep it creamy without the dairy. Your casserole will maintain a rich, indulgent taste that everyone can enjoy.
-
Herb Infusion: Stir in fresh chopped herbs like cilantro or parsley into the beef for a burst of freshness. It elevates the dish and creates beautiful color contrast on your plate.
-
Veggie Boost: Toss in some chopped bell peppers or spinach before baking for an added veggie punch. These colorful additions will bring more nutrients and flavor to your casserole.
-
Creamy Cauliflower: Swap out sour cream for a blended cauliflower puree to lighten the dish while keeping it rich and creamy. This variation provides a nutritious twist that still feels indulgent!
-
Cheese Variations: Experiment with different types of cheeses, like pepper jack for a spicy twist or gouda for a smoky flavor. Each choice will change the profile of the casserole beautifully.
-
Low-Sodium: For a healthier option, use low-sodium canned tomatoes and skip the added salt. It’s a small change that can make a big difference for those watching their sodium intake.
How to Store and Freeze Cheesy Keto Ground Beef Casserole with Tomatoes
Fridge: Store leftovers in an airtight container for up to 3 days. Reheat in the microwave or oven until warmed through for delicious leftovers!
Freezer: Freeze individual portions in airtight containers for up to 2 months. Thaw overnight in the fridge before baking or reheating.
Reheating: For the best taste, reheat in the oven at 350°F for about 20 minutes or until heated through. The cheese will melt beautifully, keeping the casserole’s charm intact.
Wrap Well: If freezing, make sure to wrap tightly in plastic wrap and foil to prevent freezer burn, preserving the flavor of your Cheesy Keto Ground Beef Casserole with Tomatoes.
Cheesy Keto Ground Beef Casserole with Tomatoes Recipe FAQs
What kind of ground beef is best for this casserole?
Absolutely! I recommend using 80/20 ground beef for a perfect balance of flavor and moisture. Leaner cuts may dry out the casserole, while fattier cuts can make it greasy. You want that juicy texture that really compliments the cheese and tomatoes.
How should I store leftovers from the casserole?
Very! Store any leftovers in an airtight container in the fridge for up to 3 days. When you’re ready to enjoy them again, simply reheat in the microwave or oven until warmed through. It’s as satisfying as the first serving!
Can I freeze the Cheesy Keto Ground Beef Casserole with Tomatoes?
Absolutely! Freeze individual portions in airtight containers for up to 2 months. To thaw, place in the fridge overnight. When ready to bake or reheat, preheat your oven to 350°F and bake for about 20 minutes or until heated thoroughly. Just ensure it’s wrapped tightly to prevent freezer burn!
What should I do if my casserole is too watery?
Common troubleshooting! If you notice excess liquid when baking, it’s likely due to the moisture from the tomatoes. To prevent this, drain the RO*TEL® well before mixing. Alternatively, if it’s already baked and watery, you can carefully spoon out some of the liquid, then pop it back in the oven for a few extra minutes to help it thicken.
Are there any dietary considerations to keep in mind?
Yes, very much! This casserole is gluten-free, making it suitable for those with gluten sensitivities. However, always check the product labels, especially for the sour cream and cheese, to avoid any allergens. If serving to pets, please remember that onions and certain spices can be harmful. This recipe is specifically for human enjoyment!
What alternative ingredients can I use?
For those looking for substitutions, ground turkey or chicken can be used in place of beef to lower the fat content. You can also swap in Greek yogurt for sour cream for a lighter option, and if you’re dairy-free, consider using vegan cheese that melts well. Always mix and match to suit your taste!

Cheesy Keto Ground Beef Casserole with Tomatoes in 25 Minutes
Ingredients
Equipment
Method
- Preheat your oven to 350°F.
- Combine ingredients in a pan: In a large skillet over medium-high heat, add one can of drained RO*TEL®, ground beef, chili powder, cumin, garlic powder, and salt.
- Cook until browned: Stir the mixture frequently until the beef is cooked through and no longer pink.
- Transfer to a casserole dish: Pour the mixture into an 8×8” casserole dish.
- Mix sour cream and remaining RO*TEL®: In a small bowl, combine the drained half can of RO*TEL® with sour cream and mix until well blended.
- Sprinkle the cheddar cheese: Top the sour cream mixture with shredded cheddar cheese.
- Bake until melty: Place the casserole dish in the preheated oven and bake for 7-10 minutes.
- Serve hot: Take it out of the oven and let it cool slightly before serving.







