1. Cut roast into 1-inch pieces. Heat a large nonstick skillet over medium heat. Add oil to pan; swirl to coat. Add pork; sauté 5 minutes or until browned.
2. Place pork, bell pepper, and green onion pieces in a 4-quart electric slow cooker coated with cooking spray; stir well.
3. Combine hoisin sauce and next 7 ingredients (through garlic) in a small bowl; stir until well blended. Pour mixture over pork and vegetables; stir well.
4. Cover and cook on HIGH for 1 hour. Reduce heat to LOW, and cook for 5 to 6 hours. Serve over rice; sprinkle with sliced green onions.
Flavor Tip: With their crisp texture and sweet flavor, bell peppers are a nice complement to the pork in this dish. If you plan to use the peppers within a day or two, keep them at room temperature for better flavor.