Boil about 5 cups of young plantain leaves (if using older leaves, may have to be boiled through several changes of water) Test for tenderness and flavor as they cook, they shouldn't be bitter. Young leaves should only need one change of water.
Make a cheese sauce: In small saucepan, melt 1 T. butter. Whisk in 1 T. flour, over low heat, until smooth. Still whisking, stir in 1 c. chicken broth, turning the heat to medium high. When the mixture is smooth and bubbling, stir in 1 1/2 c. shredded cheddar cheese (you can use less cheese if you use a good sharp cheddar... )
Pour the cheese sauce over the cooked plantain leaves, dust with fresh ground pepper.
Plantain can be used in place of spinach, in most recipes. Just make sure the leaves are young!
This lowly but powerful plant should have a few square feet of it's own in every yard or garden. It has been speculated that it could be the first "weed" to come under cultivation in a survival situation.