Preheat oven to 350 degrees F. Coat twelve 2 ½-inch muffin cups with cooking spray.
Line prepared muffin cups with ham. Divide tomatoes, green onions, basil and pepper among cups. Top with cheese. Pour eggs over tomato mixture.
Bake 20 to 25 minutes or until puffed and a knife comes out clean. Cool in cups 5 minutes. Remove from cups. If desired, top with additional green onions and/or fresh basil. Serve warm.
