Step 1

In a medium bowl, beat cream cheese and egg yolk until smooth. Stir in cheese, set aside.

Step 2

Roll out each bread slice to about 1/8-inch thickness with a rolling pin. Spread cheese mixture evenly over each slice of bread. Roll up each slice jellyroll-style and place on a baking sheet.

Step 3

In a medium bowl, combine butter and taco seasoning mix. Brush butter mixture lightly over rollups on all sides. Roll them into crushed tortilla chips until coated. Place seam side down on baking sheet, cover and freeze at least 2 hours.

Step 4

Before serving, preheat oven to 400 degrees F. Bake rollups 10 to 12 minutes, or until coating is crispy.