COOK and stir red peppers and half of the onions in large nonstick skillet on medium-high heat until crisp-tender. Season chops with salt and black pepper. Add to vegetables in skillet; cook 5 to 6 min. on each side or until chops are golden brown on both sides. Stir in the broth; cover. Reduce heat to low; simmer 10 to 15 min. or until chops are cooked through.
MEANWHILE, melt margarine in medium saucepan on medium heat. Add remaining onions and the apples; cook 2 to 3 min. or until tender, stirring occasionally. Add the water; bring to boil. Stir in stuffing mix. Remove from heat; stir until well blended. Gently stir in the trail mix.
REMOVE chops, onions and peppers from skillet with a slotted spoon; place on large serving platter. Top with the stuffing mixture.