Hmm, Pepporoni pizza is good; burgers are good, but pepporoni pizza burgers?

 Why not?

Amount Measure Ingredient -- Preparation Method
-------- ------------ --------------------------------
1 pound lean ground beef
15 ounces pizza sauce -- canned
1 teaspoon dried oregano
1/2 onion
1/2 green bell pepper
1 ounce pepperoni slices
1/2 cup mozzarella cheese -- shredded
1/2 cup sliced mushrooms
6 hamburger buns -- split

In a skillet, brown ground beef; drain. Stir in pizza sauce and oregano.
In a food processor, chop onion, pepper,
pepperoni; add to beef mixture. Simmer 20-25 minutes.
Spoon onto buns, top with cheese and mushrooms. Serve immediately.