Clicker count increase by 1 each time

[blakefindlay]

Trying out making a clicker game and wondering what the likely simple fix to this is. I'm not quite sure how to approach it but I want to have the clicker count increase by 1 each time. Thanks in advance

def button():
    a = 0
    b = 1
    result = a + b
    counter_label = Label(root, text=str(result) + " cookies")
    counter_label.grid(row=4, column=2)


button_click = Button(root, command=button, text="Click", width=15, height=5)
button_click.grid(row=2, column=2)

root.mainloop()