A bubbling pan of cheesy meatballs in marinara is one of those dinners that feels like comfort food… but still fits a low-carb plan. This keto meatball casserole nails that sweet spot: juicy meatballs (no breadcrumbs), dollops of ricotta, and a mozzarella-parmesan top that turns golden and gooey in the oven.
Why you’ll love this dish
- Keto-friendly comfort: all the “meatballs + marinara + cheese” vibes, without pasta.
- High-protein + filling: it eats like a real dinner, not “diet food.”
- Great for busy nights: you can bake the meatballs ahead, then assemble and reheat fast.
- Family-proof: meatballs + melted cheese is hard to argue with.
“We’re not even doing keto right now and the whole family loved it… I rarely leave reviews, but this was so good.”
One thing I’d challenge (because it’s easy to assume): “keto casserole” doesn’t automatically mean low sugar—jarred marinara varies a lot. If net carbs matter to you, read the label and pick a lower-sugar sauce.
How to make Cheesy Keto Meatball Casserole
- Mix a simple meatball mixture (ground meat + egg + cheeses + aromatics + seasoning).
- Bake meatballs until cooked through.
- Layer meatballs + marinara + ricotta + mozzarella in a casserole dish.
- Bake again until bubbly and melty.
- Finish with fresh basil (it matters more than people think).
Ingredients
What you’ll need
For the meatballs
- 2 lb ground beef
- Swaps: ground turkey/chicken/pork, or half beef + half pork; adding some Italian sausage boosts flavor.
- 1 egg (binder)
- 1/2 cup grated parmesan
- 3/4 cup shredded mozzarella
- 1/4 cup grated onion
- 3 garlic cloves, minced
- 3 Tbsp chopped parsley
- 1/2 tsp onion powder
- 1/2 tsp garlic powder
- 1/2 tsp Italian seasoning
- Salt + pepper
For the casserole
- 3 cups marinara (or about 24 oz jar)
- Tip: choose a lower-sugar marinara if you’re tracking carbs.
- 1/2 cup ricotta
- 1/2 cup shredded mozzarella
- 2–3 Tbsp chopped fresh basil
Optional low-carb binders (only if you want a firmer meatball): almond flour or crushed pork rinds.
Directions
- Heat oven: Preheat to 400°F (205°C).
- Make the meatballs: In a large bowl, combine ground meat, parmesan, mozzarella, egg, grated onion, garlic, parsley, and seasonings. Mix just until combined (overmixing can make meatballs dense).
- Shape: Scoop and roll into 15–16 large meatballs (or smaller if you prefer—see tips).
- Bake meatballs: Place on a parchment-lined baking sheet or in a baking dish. Bake 20–25 minutes until cooked through.
- Drain: Carefully pour off excess grease if needed (keeps the casserole from getting oily).
- Assemble casserole: Move meatballs into a greased casserole dish. Spoon marinara over them. Add small dollops of ricotta across the top, then sprinkle mozzarella.
- Bake again: Return to oven 15–20 minutes until the cheese is melted and bubbly.
- Finish: Top with fresh basil and serve.
How to serve Cheesy Keto Meatball Casserole
- Classic keto plate: with a big salad (Caesar works great).
- Low-carb “pasta” vibe: over zucchini noodles or spaghetti squash.
- Veg side: roasted broccoli, cauliflower, or green beans.
- Not keto / feeding a crowd: garlic bread on the side makes everyone happy.
How to store
- Fridge: airtight container, 3–4 days.
- Freeze (whole casserole): wrap well (plastic wrap + foil) and freeze up to 3 months.
- Thaw: overnight in the fridge, then bake until hot and bubbly.
Food safety note: reheat leftovers until steaming hot throughout (and if you’re using a thermometer, aim for 165°F / 74°C).
Tips to make it better
- Don’t overmix the meatball mixture—mixing too long can make them tough.
- Choose marinara strategically: “keto” success often comes down to sauce sugar.
- Ricotta placement: small dollops > spreading a full layer (better texture and pockets of creaminess).
- Grease control: draining after the first bake keeps the final casserole from separating.
Variations
- Spicy: add chili flakes to the meatballs or use arrabbiata-style sauce.
- Extra Italian: mix in a little fennel seed + use half sausage, half beef.
- Dairy tweak: swap ricotta for cottage cheese (blended) if you prefer it smoother/lighter.
- Mini meatballs: make ~24 smaller ones and reduce first bake time by ~5 minutes.
FAQs
Can I use frozen meatballs?
Yes, but thawing helps it bake evenly. If they’re already cooked, you’re mainly heating through and melting the cheese—just watch that the casserole doesn’t get watery.
How do I keep the meatballs tender without breadcrumbs?
Egg + cheese help bind, and grated onion adds moisture. Also: don’t overmix, and don’t overbake.
How do I make it even lower carb?
Use a lower-sugar marinara (check labels), and keep an eye on ricotta portions if you’re counting closely.
Can I freeze it before baking?
Yes. Assemble, wrap tightly, freeze. Thaw overnight and bake until bubbly (you can add fresh basil after baking).
Print
Cheesy Keto Meatball Casserole
- Total Time: 60
- Yield: 4 servings
- Diet: Keto
Description
A delicious bubbling pan of cheesy meatballs in marinara that is low carb and keto-friendly, perfect for family dinners.
Ingredients
- 2 lb ground beef
- 1 egg
- 1/2 cup grated parmesan
- 3/4 cup shredded mozzarella
- 1/4 cup grated onion
- 3 garlic cloves, minced
- 3 Tbsp chopped parsley
- 1/2 tsp onion powder
- 1/2 tsp garlic powder
- 1/2 tsp Italian seasoning
- Salt + pepper
- 3 cups marinara (about 24 oz jar)
- 1/2 cup ricotta
- 1/2 cup shredded mozzarella
- 2–3 Tbsp chopped fresh basil
Instructions
- Preheat the oven to 400°F (205°C).
- In a large bowl, combine ground meat, parmesan, mozzarella, egg, grated onion, garlic, parsley, and seasonings. Mix just until combined.
- Scoop and roll the mixture into 15–16 large meatballs.
- Place the meatballs on a parchment-lined baking sheet or in a baking dish. Bake for 20–25 minutes until cooked through.
- Drain any excess grease if needed.
- Move meatballs into a greased casserole dish. Spoon marinara over them. Add dollops of ricotta and sprinkle with mozzarella.
- Return to the oven and bake for 15–20 minutes until the cheese is melted and bubbly.
- Top with fresh basil and serve.
Notes
Choose a lower-sugar marinara sauce if tracking carbs. Store leftovers in an airtight container for 3–4 days or freeze for up to 3 months.
- Prep Time: 15
- Cook Time: 45
- Category: Main Course
- Method: Baking
- Cuisine: Italian