Preheat oven to 375 degrees. Spray muffin tins with nonstick cooking spray
Remove the dough from the tube, unroll.
There are 8 crescent triangles. Make four rectangles of dough by keeping two of the triangles in tact.
Push and press the rectangle of dough into a greased muffin tin so that they form a small pie.
Dish out a spoonful of the cherry filling into each crescent pie. (Don't overflow, 1/2 the can will be left over after you fill the pies, so you can make an extra 4 if you want?)
In a small bowl, combine sugar, flour, cinnamon, water and softened butter. Use a fork to mix up ingredients until crumbly.
Sprinkle streusel on top of the cherry pies until desired effect, you may have some leftover depending on how much you use.
Bake in a 375 degree oven for 12-13 minutes until the edges start to turn golden brown.