Preheat the oven to 350º Fahrenheit. Spray a shallow baking dish (at least 7x11"). Make sure the baking dish has sides to catch juices.
In a bowl, combine the beef, onion, egg, bread crumbs, salt, pepper and chili sauce. Mix until combined.
Shape the meat into a loaf and place into the prepared baking pan.
Bake for 55-60 minutes or until the internal temperature reaches 160º Fahrenheit.
In a small bowl, mix together the crushed pineapple and chili sauce. Brush this sauce over the meatloaf and return to the oven for an additional 15 minutes.
Allow the meatloaf to rest 5 minutes before slicing and serving.
The calories shown are based on the meatloaf being cut into 8 pieces, with 1 serving being 1/8 of the meatloaf. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information.**