2mediumwhite onionschopped in half and sliced thinly
3mediumbell pepperscored, seeded, and sliced thinly
1 ½tablespoonolive oil
Instructions
Slice all of the burger vegetables. Mix with the olive oil, salt, and toss to cover evenly. Set aside.
Place the veggies on cookie sheets. Place in the oven, on the middle rack, at 450°F for 25 minutes, stirring once or twice.
As the vegetables cook, start preparing the burger patties. In a large mixing bowl, combine ground meat, egg, and spices. If you choose to use beef liver, omit the egg. Blend your beef liver in a high-powered blender until it is in liquid form. Pour into your beef and spice mix.
Mix everything together using your hands, and form it into 6 to 8 patties. If using liver, you may need to make them into patty shapes and "plop" them onto the baking sheet. They will solidify during baking.
Open the oven door and stir your sauteed burger veggies. They should be browning and very soft. If they are dark brown on the edges, remove them. If not, keep them in while the burgers are cooking.
Place the aluminium-foil covered baking sheet topped with burgers on the top rack of the oven and set a timer for 5 minutes.
When the timer goes off, take your burgers out, as well as your sauteed vegetables. Flip your burgers carefully, using a spatula, and place back into the oven for 3 to 4 minutes.
When the timer goes off, take out your burgers and check them. They should be cooked to medium. Use less time for medium-rare and more time for well-done.