Recipe

High-Protein Cheesy Meatball Casserole

Harper Quinn August 22, 2026 11 min read

Cheesy Meatball Casserole

Twenty meatballs in marinara under a mozzarella lid – Sunday dinner in 55 minutes

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This is meatballs without the pasta. You mix a Parmesan almond-flour batch, nestle twenty balls in no-sugar marinara, and bake until the mozzarella lids every one. The glass dish looks like the photo – rows of browned tops, sauce bubbling at the edges, steam coming off the cheese.

About 55 minutes. A quick sear first keeps the balls round in the sauce.

Prep20 min

Bake30-32

Servings5

Protein42g

Net Carbs6g

Calories420

Why you’ll love this casserole

42g protein per serving – four meatballs that fill you
Only 6g net carbs – no pasta, no breadcrumbs
About 55 minutes, one bowl plus one dish
Rows of cheese-capped meatballs, like the photo
Sauce stays thick, not watery
Reheats without falling apart

Health notes

High protein: Beef plus Parmesan in the mix and mozzarella on top.
Low carb: Almond flour instead of breadcrumbs. No-sugar marinara.
One dish: Twenty meatballs, five servings.
Meal-prep friendly: The balls hold their shape in leftovers.

Key element – sear first so they stay round

Raw balls dropped in sauce slump and look like dumplings. A 2-minute roll in a hot skillet sets the outside. Then they sit in neat rows, hold a mozzarella cap, and stay the size you see in the photo.

Ingredients

Meatballs (about 20)

1 3/4 lb (800g) lean ground beef (90/10)
1 large egg
1/2 cup grated Parmesan
1/3 cup (35g) fine blanched almond flour
2 garlic cloves, minced
1 tsp Italian seasoning
3/4 tsp salt + 1/2 tsp black pepper
1 Tbsp olive oil, for searing

Sauce and top

2 1/2 cups no-sugar marinara
1 1/2 cups shredded mozzarella
2 Tbsp grated Parmesan
1/2 tsp dried oregano, to finish

Swaps

Beef and pork: Use 1 lb beef and 3/4 lb pork for a richer ball.
Turkey: Use ground turkey and add 1 Tbsp olive oil to the mix so they stay moist.
Pork rind crumbs: Swap almond flour for 1/3 cup crushed pork rinds.
Store meatballs: Use 20 cooked low-carb meatballs. Skip the sear. Bake 22 minutes.

Instructions

Heat the oven. Heat oven to 400 F (205 C). Pour 1 1/2 cups marinara into a 9×13 glass dish and spread it even. Mix the rest of the sauce in a small bowl for later.

Mix the meatballs. In a large bowl, combine beef, egg, Parmesan, almond flour, garlic, Italian seasoning, salt, and pepper. Mix with your hands just until it holds. Overmixing makes them tough. Roll 20 balls, about 1 1/2 inches each.

Sear to set. Heat oil in a large skillet over medium-high. Brown the balls 1 to 2 minutes per side, just to set the outside. They do not need to cook through. Work in batches so they do not steam.

Nestle and sauce. Set the balls in rows in the dish. Spoon the remaining marinara over and around them. Cover with mozzarella and a dusting of Parmesan and oregano.

Bake and rest. Bake 30 to 32 minutes until the cheese is melted and spotted and the centers hit 165 F. Rest 8 minutes so the sauce settles. Serve 4 meatballs per plate.

Pro tips

Wet your hands when you roll. The mix will not stick.
Same-size balls cook even. A small scoop helps.
Check your marinara label. Some jars hide 8g sugar per serving.
If the top browns too fast, tent loosely with foil for the last 8 minutes.
Leftovers reheat at 350 F for 15 minutes. The microwave makes the cheese rubbery.

Nutrition

Nutrient	Per serving (4 meatballs)
Calories	420
Protein	42g
Net carbohydrates	6g
Total carbohydrates	8g
Fiber	2g
Total fat	24g
Sodium	780mg

Estimates with 90/10 beef, almond flour, and no-sugar marinara. Cheese brand and jar will shift the numbers.

Variations

Ricotta pockets

Dot 1/2 cup ricotta between the rows before the mozzarella goes on.

Spicy

Add 1/2 tsp chili flakes to the mix and a pinch on the cheese.

Zucchini bed

Lay thin zucchini ribbons under the sauce for extra veg.

Mini tins

Divide into 5 small foil tins, 4 balls each. Bake 24 to 26 minutes.

Storage

Method	Time	Notes
Refrigerator	Up to 4 days	Covered; reheat at 350 F
Freezer	Up to 2 months	Freeze baked; thaw overnight, reheat 20 minutes
Unbaked balls	1 day	Roll, cover, sear and bake the next day

FAQ

Yes. About 6g net carbs per serving with almond flour and no-sugar marinara. Regular breadcrumbs and pasta sauce jump the carbs.

The mix was too wet or you skipped the sear. Add a spoon of almond flour if it feels loose, and brown the outside before they go in the sauce.

Yes, if they are low-carb. Thaw first, skip the sear, and bake 22 to 24 minutes until hot and the cheese melts.

You can skip it and bake 35 to 38 minutes. They will be a little flatter. The sear is what keeps the rows neat.

Yes. Roll and sear, nestle in the sauce, cover, and refrigerate up to a day. Bake 34 to 36 minutes from cold.

The cheese should be melted and spotted, the sauce bubbling, and a center ball should read 165 F.

Test your knowledge

5 quick questions about this casserole

1. Protein per serving?

2. Net carbs per serving?

3. Oven temperature?

4. Why sear the meatballs first?

5. What replaces breadcrumbs?

By Harper Quinn

Home cook behind Your Daily Recipe — fresh recipes for every day.

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