In a small bowl stir together the all-purpose flour, seasoned salt, black pepper, ground cumin, granulated garlic or garlic powder, onion powder and paprika.
Dust the short ribs on all sides with the seasoned flour mixture.
In a large pot or dutch oven heat a few drizzles of olive oil. Brown the ribs in batches over medium-high heat on all sides until golden brown.
Spray the crock of a 6 quart slow cooker with cooking spray. Layer the ribs in the slow cooker.
Add the rotel tomatoes, ketchup, beef stock, molasses, apple cider vinegar, brown sugar, diced onion, chipotle pepper with adobo sauce, seasoned salt and cumin to a stand blender. Pulse until smooth. Drizzle over the ribs.
Lock the lid in place, cook on low for 8 hours or until fork tender. (Make adjustments as needed according to how your slow cooker performs.)
When done, use a slotted spoon to carefully remove the ribs from the sauce.
Skim the fat from the sauce, or chill the liquid (if making in advance) and allow the fat to congeal on the top, then remove it.
Serve the ribs drizzled with sauce over grits, mashed potatoes, rice or pasta
Optional Broiling: To char the ribs. place onto a baking sheet and brush with sauce. Broil in the oven for 3-5 minutes, if desired.