A hearty meatloaf made with ground beef and Italian sausage, stuffed with melted mozzarella cheese and spinach, then topped with marinara sauce. Perfect comfort food with a cheesy surprise center.
Use a meat thermometer to ensure proper doneness (160°F internal temperature).
Don't overmix the meat mixture to keep texture tender.
Seal edges tightly when rolling to prevent cheese from leaking.
Can be assembled 24 hours ahead and refrigerated before baking.
Leftovers keep in refrigerator for up to 4 days and freeze for up to 3 months.
For gluten-free version, substitute bread crumbs with gluten-free breadcrumbs.