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Spaghetti Squash Meatball Casserole

Author Amee


  • For the meatballs:
  • 2 lbs lean ground beef 90% or less
  • 1 whole egg
  • 1 egg white
  • 2 cloves garlic minced
  • 1 tbsp dried parsley
  • 1/2 cup grated parmesan cheese
  • 1/2 cup breadcrumbs I use gluten free
  • 1 tbsp extra virgin olive oil
  • salt and pepper to taste
  • For the casserole:
  • 1 large spaghetti squash
  • 2 tbsp extra virgin olive oil
  • 4 cloves garlic minced
  • 1 sweet onion chopped
  • 1 tbsp Italian seasoning
  • 1/2 cup parmesan cheese
  • 1 23.5 oz jar Newman's Own marinara sauce
  • 8 oz fresh mozzarella cheese sliced


  • Preheat oven to 350 degrees F.
  • Slice spaghetti squash down the middle, lengthwise and brush the inside part with olive oil.
  • Lay squash, seeded part down onto a cookie sheet and bake for 35-40 minutes.
  • While squash is baking, mix all meatball ingredients together (except olive oil) in a large bowl, working it well with your hands.
  • Roll into golf ball size balls and refrigerate until your squash comes out of the oven. You should have about 18-20 meatballs.
  • When squash is done, flip it with the flesh side up and set aside to cool
  • Turn oven up to 375 degrees F. and heat 1 tbsp olive oil a large skillet over medium-high heat.
  • Brown meatballs on all sides and place them onto a baking sheet.
  • Bake meatballs for 20 minutes, until cooked through.
  • Wipe out your skillet and add the remaining tbsp olive oil.
  • Cook onion and garlic on medium heat until onion is soft, about 4-5 minutes.
  • while onion and garlic are cooking, spoon out the seeds in the squash and shred squash with a fork (it should look like thin noodles)
  • Add shredded squash to skillet, along with parmesan cheese, Italian seasoning and salt and pepper, to taste.
  • Stir until just blended and remove from heat.
  • Spread a thin layer of sauce in the bottom of a 9x13 baking dish
  • Top with squash mixture, then arrange your meatballs on top
  • Pour remaining sauce over and top with slices of fresh mozzarella.
  • Lower oven heat to 350 degrees and bake for 30 minutes.
  • Serve immediately.