Preheat oven to 350°F.
Place butter in a cake pan.
Place pan in the oven to melt butter.
When butter has just melted, remove pan from oven. Leave oven on.
In a medium bowl, add flour, sugar, milk and vanilla. Mix together. (It's okay if it's lumpy - Shane, again)
Pour flour mixture into pan with the butter.
Add peaches to cake pan. Stir around a bit with the other ingredients.
Place back in hot oven. Bake for about 45 minutes.
Remove from oven and serve hot or warm. (With Vanilla Ice Cream, if you like. - Alton again)