Heat the oven to 350°F. Lightly grease 4 six to eight-ounce ramekins and place them on a baking sheet. (If you don't have ramekins, lightly grease a 1-1.5 liter (~1.2 quart) casserole dish.
Add all of the ingredients except the pecans to the blender. Blend until the oats are broken down and the mixture is smooth. Stir in 1/2 cup of the pecans.
Divide the batter among the 4 ramekins (or pour it all into the casserole dish) and top each with the remaining pecans.
Bake for 25-30 minutes, or until a toothpick inserted into the center of the baked oatmeal comes out clean. (Note that if you're cooking the baked oatmeal in the larger casserole, it will likely take longer to cook, approximately 35-40 minutes).