In a large bowl, combine crabmeat, sour cream, oats, bread crumbs, Dijon mustard, crab boil, oregano, and black pepper. Gently mix ingredients together, being careful not to break up crabmeat.
Take 1/3 of the mixture and shape into 4 crabcakes, each about 1-inch thick. Freeze (up to 3 months) or refrigerate remainder of filling (up to 24 hours) for another use. Heat oil in a large, oven-proof skillet. Add crab cakes and saute 2 to 3 minutes per side, until golden brown. Transfer pan to oven and bake 20 minutes, until crab cakes are cooked through.
Serve 4 cakes for this meal and reserve remaining crab cakes for later in the week.
Amounts above are to make enough crab cakes for 12 servings OR to make crabcakes plus Crab-Corn Chowder, Crab-Stuffed Poblano Peppers, and Hot Artichoke-Crab Dip.