A couple of things to remember when picking out your recipe to put on a towel. I'd try and keep the ingredient list to no more than 8 - 10 items and the directions not overly complicated or long. You don't want to take up the entire towel with script, just the lower portion of it.
It was best for my towel to keep the choice of letters to easy block script. Other fancier scripts tend to be "heavy". But then again it will depend on the weight of your towel. I used a simple and very inexpensive "flour sack" towel available in just about any Walmart or Target type store. They tend to be very light but are great at absorption and are one of my "go to" towels for drying dishes. And be sure and check your spelling (ask me how I know).
For anyone wondering about the script size, in my sample above the recipe title is in about a 12mm font, the ingredients are about 10mm font and the directions about 8mm. You just have to play with it in your design software to get it right. Add a little flourish above and below and then a nice border at the bottom out of one of your favorite fabrics. You might even have left over fabric from a quilt or other project. Measure the width of the towel and add about 2" to each end. I did a double border. Just above the outer border is a 1" wide border, folded in 1/2 and added to the main border before it is added to the towel.
So when you're looking for an idea to give a family member that seems to have everything (and I have plenty of those), give them something from the past that will bring back warm memories.