Meanwhile, mince garlic, chop onion, pepper and celery.
Heat a large skillet over medium heat and add oil. Once oil is hot, add veggies and saute for 5-6 minutes.
Drain and rinse beans; add to skillet and toss around for 2-3 minutes. Add rice, vinegar, salt, pepper and sliced green onions. Continue to cook until heated through.
Toss spinach a large mixing bowl. Section oranges and cut into thirds. Slice apples and cut into thirds. Add oranges, apples and chopped walnuts with spinach. Toss to combine and use your favorite salad dressing if desired.