01 - Pat lamb cubes dry with paper towels and season lightly with salt and pepper.
02 - Heat olive oil in a large Dutch oven over medium-high heat. Brown the lamb in batches, turning to color all sides. Remove browned lamb and set aside.
03 - In the same pot, add onion and garlic. Sauté for 3-4 minutes until fragrant and softened.
04 - Stir in tomato paste and cook for 1 minute. Add red wine to deglaze, scraping up any browned bits from the bottom.
05 - Return lamb to the pot. Add carrots, parsnips, potatoes, rutabaga, and celery.
06 - Pour in stock, add bay leaves and thyme, then bring to a gentle simmer.
07 - Cover and simmer on low heat for 1.5-2 hours, stirring occasionally, until lamb is tender and vegetables are soft.
08 - Taste and adjust seasoning. Remove bay leaves and thyme stems.
09 - Serve hot, garnished with chopped parsley if desired.