Recipe for Horseradish Meatloaf with Caramelized Onions and Sour Cream-Horseradish Sauce

This Horseradish Meatloaf is really something special in the meatloaf world, with added flavor from caramelized onions, garlic, horseradish, Worcestershire sauce, and a touch of sour cream mixed into the meat before it's cooked, and a tasty sauce of sour cream, mayo, and horseradish. But this is not quick and easy meatloaf. This is meatloaf to make on Sunday afternoon when you have time to gently caramelize the onions, mix the ingredients together, mix the sauce, and then enjoy leftover meatloaf for lunch all week.