Hamburger tater tots refers to a type of casserole made from ground beef, frozen fried potato nuggets and other ingredients. The name Tater Tots is a registered trademark of Ore-Ida, a division of the H. J. Heinz company, but the term has become genericized and widely used in recipes.
CookingChannelTV.com offers a recipe for hotdish, a traditional Minnesotan tater tot casserole. For this recipe, brown 1 pound lean ground beef and 1 chopped yellow onion in 1/4 cup olive oil. Season with salt and pepper, then add the beef mixture to the bottom of a baking dish. Top with 2 cups frozen cut green beans, 1 3/4 cups frozen corn kernels and two 8-ounce cans of cream of mushroom soup. Arrange 1 pound of Tater Tots to top the casserole, then bake uncovered for 1 hour at 350 degrees Fahrenheit.