Preheat over to 400 degrees Fahrenheit.
Mix dry ingredients in a mixer.
Add cubed butter and let it work it's way into the flour, this will take a few minutes.
Add milk, chips and vanilla and mix until mostly combined.
Turn out onto a floured surface and combine mix.
Shape it into a rectangle to cut your triangles out.
Place on a lined baking sheet and bake for 12-15 minutes.