To prepare cups, weigh or lightly spoon masa harina into dry measuring cups; level with a knife. Combine masa, salt, and chile powder in a medium bowl, stirring with a whisk. Stir in 6 tablespoons warm water and 4 teaspoons melted butter; stir thoroughly to combine. Turn dough out onto a clean surface; knead lightly 1 minute. Cover dough; let rest 30 minutes.
Preheat oven to 400°.
Place dough on a sheet of plastic wrap; cover with another sheet of plastic wrap. Roll dough, still covered, to 1/8-inch thickness. Remove top sheet of plastic wrap. Cut 24 rounds from dough using a 2 1/2-inch round cutter. Coat 24 miniature muffin cups with cooking spray. Place 1 dough round in each muffin cup, gently pressing into bottom and up sides of cup. Bake at 400° for 14 minutes or until crisp and dry. Cool in pans on a wire rack. Remove corn cups from pans.
To prepare salad, combine chopped cooked shrimp, corn kernels, salsa verde, finely chopped celery, chopped green onions, and reduced-fat mayonnaise; cover with plastic wrap, and chill 20 minutes. Spoon 2 teaspoons salsa shrimp salad into each corn cup.
So, I have to explain this rating. The corn cups themselves were terrible. They completely fell apart. So, I used uncooked shrimp, basted with butter and sprinkled with a little chipotle chile powder and baked til cooked. Chopped up the shrimp (I used 4x) and added it to the recipe doubled, used sour cream in place of mayo. Didn't last at the party. Had to make more for myself. Great with tortilla chips, or some ate it with a fork as a salad.
I followed the directions to the T for the corn cups, but when I tried to put the rolled out dough in the muffin tins they fell apart! I will try again, and maybe some one can help me find out what I did wrong, I never worked with masa harina before so maybe I did something wrong. The Salad is good, but I would use more salsa verde next time.