High fiber snacks can be a boring substitute that too when you have had a habit of eating guilty pleasure food on a daily basis. The down low with guilty pleasure or junk food is that, even though taken in good quantities because they taste so good, they often leave you insatiate which leads to overeating and eventually gaining unhealthy pounds.
You do not have to give up on taste to switch to an all high fiber snack. There are ample ways through which you can improve your experience with high fiber snacks.

You can use a multigrain bread in your sandwich instead of the regular white one.

Kick the old habit of having plain old corn flakes with milk and replace it with oats and bran flakes. Oats and bran flakes are rich source of soluble fiber which is very good for digestion. Mix the oats and bran flakes with berries. It will definitely increase the Fiber content in your meal.

Broccoli soup added with cream and a hint of garlic is a great source of high fiber as broccoli is a great source of proteins and soluble fiber. If you are Hungry for a midnight snack, try having peanut butter sandwich. Peanut butter is a great source of fiber and even a greater substitute to your regular table butter. Add cheese and grill it until it melts to form threads and you have a grilled peanut butter sandwich, a savory high fiber snack, that will pamper your taste buds without adding on the unhealthy calories.