Preheat the oven at 200 degrees Celsius.
Crumble the flour together with the flour in a big bowl.
Pour the water in the flour and butter and mix it together like a paste. If it still sticks to the sides of the bowl, add some more flour and continue to mix it together.
Place the paste in a pie form and cover the form bottom and a few centimetres up on the edges.
Pick the bottom a few times on different places with a fork.
Place the pie form in the middle of the oven for fifteen minutes.
In the meanwhile continue with the filling.
Fry the minced beef in a frying pan.
Cut the onion, tomatoes and the peperonis.
Pour the taco spices on the minced beef and stir.
Add the sour cream in the frying pan and mix it well.
Add the vegetables in the frying pan and stir it lightly.
Take out the pie bottom from the oven and add the minced beef mixture in the pie form.
Sprinkle the cheese on top of the pie, so it covers the top.
Place the pie in the middle of the oven for twenty minutes, or until the cheese becomes lightly brown on the surface.
Take out the pie and serve it warm.