Brown Italian sausage in a small skillet. While meat cooks, cut block of mozzarella cheese into small chunks.
Stir together the tomato paste, water, olive oil, 1 T. Italian seasoning, garlic powder, 1 t. salt and crushed red pepper flakes. Drain ground beef or Italian sausage and stir into tomato mixture. Stir in the mozzarella. Cover and refrigerate until assembling.
In a medium-sized bowl, combine flour, 2 t. salt and 1 t. Italian seasoning. Cut in butter with a pastry cutter, two knives or your hands until crumbly. Slowly add the water and stir. If necessary, form the dough into a ball with your hands, adding a bit more water as needed.
Roll out dough on a lightly floured surface. Using a 2-inch round cookie cutter or glass, cut circles out of dough. Press into a mini muffin tin. Repeat as needed.
Spoon about 2 teaspoons of pizza filling into each little cup. Bake at 400 degrees for 15-18 minutes, until cheese is thoroughly melted and crust is lightly golden brown.