Preheat oven to 375 degrees. Spray cookie sheet with cooking spray. Unroll both cans of dough on floured work surface. If you are using crescent rolls, pinch the seals together to seal. Cut each sheet (one can = one sheet) into four rectangles. You will have a total of 8 rectangles when you are done.
Cook beef in a skillet over medium-high heat 5 to 7 minutes until thoroughly cooked. Stir in taco seasoning mix and salsa; simmer 5 minutes. Spoon about 1/4 cup meat mixture in center of 1 dough rectangle. Sprinkle with cheese. (I used Pepper-Jack for the adults and Cheddar-Jack for the kids!)
Fold dough over to cover the meat and make a smaller rectangle; press edges with fork to seal. Brush with egg. Sprinkle with Panko. Repeat with remaining dough and filling. Carefully place on cookie sheet.
Bake for 15 minutes or until deep golden brown.
I serve them with a potato and a vegetable.