It's one of the simplest party foods to make: Top a small slice of Italian bread with a gorgeous mixture of tomatoes, olive oil, garlic, and basil and voila -- you've got bruschetta. And though that piece of bread doesn't yield much nutritional value, the marriage of tomatoes and olive oil scores top marks for disease prevention. Tomatoes contain lycopene, a powerful antioxidant found to ward off cancer and heart disease. You've no doubt heard about the healthy fats found in olive oil -- well, in addition, that oil actually helps your body absorb some of the nutrients in the tomatoes, says Melinda Johnson, RD, National Spokesperson for the American Dietetic Association.