cooked temp of beef meatloaf
1 At an internal temperature of about 100Â°F, score the top of the meatloaf in a diamond pattern and apply a ketchup-based sauce, then continue cooking to a finished internal temperature of 160-165Â°F.2  Tent loosely with foil and let rest for 10 minutes before slicing. At an internal temperature of about 100Â°F, score the top of the meatloaf in a diamond pattern and apply a ketchup-based sauce, then continue cooking to a finished internal temperature of 160-165Â°F.