Pizza Puffs

Directions

1. 1
   Place egg whites in the work bowl of a food processor with the steel blade and whip 8 seconds.
2. 2
   With machine running, pour vinegar through feed tube and continue processing until whites are stiff, about 45 seconds.
3. 3
   Using rubber spatula,gently transfer egg whites to 1-quart mixing bowl; do not wash out processor work bowl.
4. 4
   Combine cheese, onion, pepperoni,basil, oregano and salt in work bowl and blend 10 seconds, stopping once to scrape down sides of work bowl.
5. 5
   Add mayonnaise and blend 5 seconds.
6. 6
   Add 1/4 of egg whites and mix, using 2 on/off turns.
7. 7
   Add remaining egg whites.
8. 8
   Run spatula around edge of work bowl then blend using 3 on/off turns.
9. 9
   Run spatula around edge of work bowl again and mix using 1 more on/off turn.
10. 10
    Preheat broiler.
11. 11
    Spread 2 teaspoons tomato paste over each slice of bread.
12. 12
    Mound 1/4 cup cheese mixture on each;arrange on baking sheet.
13. 13
    Broil 6 inches from heat source until tops are puffed and golden, about 3 1/2 to 4 minutes.
14. 14
    Serve immediately.