Preheat oven to 375 degrees. Grab a 9x5 loaf pan and a large baking sheet. Spray the bakign sheet with nonstick spray and set aside.
In a large bowl, mix all the meatloaf ingredients (minus the sauce ingredients), using your hands to incorporate thoroughly without overmixing. Scoop mixture into the 9x5 loaf pan and pack it in. Turn loaf pan over onto baking sheet and tap the pan to release the uncooked meatloaf. Place in preheated oven to bake for 20-25 minutes.
While meatloaf if baking, mix all the sauce ingredients in a small bowl. Once the loaf has baked for 20-25 minutes, remove from oven and evenly cover all visible edges in the sauce. Place back into the oven and then continue baking for 10 more minutes or until the center of the meatloaf reaches 160 degrees. Remove from oven and let cool for 10 minutes before slicing and serving.
Slice and serve with mashed potatoes.