1Heat oven to 375°F. Place flour in medium bowl. Cut in butter, using pastry blender or crisscrossing 2 knives, until mixture is crumbly. Stir in 1 beaten egg until well mixed. Shape into a ball. Divide into 24 balls. Press 1 ball on bottom and up side of each of 24 ungreased small muffin cups, 1 1/4x1 inch.
2Divide shrimp among cups. Sprinkle with cheese. Beat 1 egg and the egg yolk in small bowl. Stir in half-and-half and basil. Spoon about 1 tablespoon egg mixture into each cup.
3Bake about 20 minutes or until light brown. Immediately remove from pans to wire rack. Serve immediately.