Yes.
Or in my case, I buy them in bulk and I often buy thick cut, so I add 2 parts water per one part oats and simmer until the oats have fully absorbed the water. To simmer, I just get my water to a good boil, then turn the heat down to low and cover the pot. After the water is absorbed by the oats, I add my salt, margarine, and pecans (all amounts to taste) and stir thoroughly.
You can add the pecans to the oats and boil them along with the oatmeal, which I sometimes do, but that will make the pecans soft and not crunchy.