Joy of Cooking - Classic Meatloaf

Ingredients:
1 lb ground beef
2/3 cup quick-cooking rolled oats, breadcrumbs or crushed crackers
1 cup finely chopped onions (you can buy these in the frozen foods section pre-chopped)
1/3 cup ketchup
2 large eggs, lightly beaten
1 teaspoon salt
½ teaspoon ground black pepper

Preparation:
Place rack in center of oven.
Preheat oven to 350°.
Combine all ingredients in a large bowl.
Knead together with your hands until everything is well blended. Do not overmix.
Fill a loaf pan with the meat mixture, mounding the top.
Place the pan on a baking sheet and bake until the meat is firm to the touch and has shrunk from the sides of the pan or until an instant-read thermometer inserted in the center of the loaf reads 160°, 1 to 1 ¼ hours. Pour off excess fat and let stand 15 minutes.