Cocoa Brownies

I've been craving brownies for some time now. These are heaps better than a package mix.

10 tbspn (140 g) unsalted butter
1 1/4 c sugar
3/4 c cocoa
1/4 tsp salt
1/2 tsp vanilla extract
2 large eggs
1/2 c all-purpose flour

Mix sugar, cocoa and salt into softened butter. Add vanilla and stir, then add eggs, one at a time, mixing well. Finally, add in flour and mix well. Bake in 325F oven for 20-25 minutes, or until toothpick comes out with slightly moist with batter.