In 1-quart saucepan, melt butter over medium heat. Remove from heat; stir in Worcestershire sauce, pepper flakes and 3 cloves chopped garlic. Brush baguette slices on both sides with about 2 tablespoons of the butter mixture; place on baking pan. Broil 3 to 4 minutes, turning once, until toasted. Transfer to serving bowl or platter.