Nawlins Cajun Beef and Grits

Name: N'awlins Cajun Beef and Grits
Ingredients: 2 tsp. canola oil; 3 1/2 lb. boneless beef chuck, trimmed and cut into 1 chunks; 3 medium bell peppers, seeded and chopped; 1 large onion, chopped; 3 stalks celery, chopped; 3 cloves garlic, chopped; 1 can (14 oz.) diced tomatoes, drained; 1/4 c. tomato paste; 2 tsp. Cajun or Creole seasoning; 2 c. grits; 2 c. shredded sharp Cheddar cheese; Finely chopped parsley, for garnish