Bake Temperature. Bake frozen lasagna at a medium-high temperature. If you use a conventional oven, set it to 400 degrees Fahrenheit. To cook the lasagna in the same amount of time in a convection oven, you only need to set it to 350 F because the fan circulates the oven's heat more efficiently. 3. Portion Size.
Size. Most purchased, frozen veggie burgers weigh approximately 2.5 ounces, according to FatSecret. A serving consists of one veggie burger patty. Depending upon the brand you choose, a patty will have between 70 and 170 calories, according to MSNBC.com. A standard meat burger weighs 3 ounces, but larger burgers or multiple burger patties are not uncommon.
Hamburger buns or rolls make a hamburger more convenient to pick up and eat, but they also add calories. If you are going to eat a hamburger bun with your next burger, know the calorie count ahead of time to make a better decision on your burger choice.ccording to the U.S. Department of Agriculture, or USDA, a regular plain hamburger roll has 120 calories. A mixed-grain or multigrain bun has 113 calories, and a reduced-calorie bun has 84 calories.