Ingredients:
- 1/4 cup of olive oil
- 6 lamb shanks (about 4 1/2 Ibs.)
- Kosher salt and freshly ground black pepper
- 1/2 teaspoon of whole black peppercorns
- 3 stalks of celery, minced
- 2 cloves of garlic, minced
- 2 sprigs of rosemary
- 2 sprigs of thyme
- 1 bay leaf
- 1 medium yellow onion
- 5 tablespoons of tomato paste
- 2 cups of red wine
- 1 (1-lb.) eggplant
- 2 tablespoons of unsalted butter
- 3 tablespoons of all-purpose flour
- 1 cup of whole milk
- 14 cups of grated Gruyere
- Freshly grated nutmeg
Instruction:
- Use the Sear/Saute program to heat the olive oil over medium-high.
- Season the lamb shanks with salt and pepper, working in batches.
- Add to the pot and cook, turning as needed, until golden brown, about 10 minutes. Transfer the shanks to a plate. Add the peppercorns, celery, garlic, rosemary, thyme, bay leaf, and onion to the pot and cook, stirring until the vegetables begin to brown about 10 minutes.
- Stir in the tomato paste and cook until lightly caramelized, 2 to 3 minutes.
- Pour in the red wine, bring to a boil, and cook until reduced by half, 4 to 5 minutes.
- Return the shanks to the pot along with 4 cups of water and bring to a boil. Using the Slow Cook program to maintain a gentle simmer and cook, covered, until the lamb is very tender, 2 1/2 to 3 hours.
- Heat the broiler. Using a fork, pierce the eggplant all over, place on a foil-lined baking sheet, and broil, rotating as needed, until the skin blackens and the flesh is tender,18 to 20 minutes.
- Peel off and discard the charred skin and discard the seeds. Puree the flesh until smooth.
- In a small saucepan, melt the butter over medium-low heat. Add the flour and cook, whisking, for 2 minutes.
- Pour in the milk, bring to a boil while whisking, and cook, until the sauce thickens, 2 to 3 minutes.
- Remove the pan from the heat and stir in the eggplant puree and Gruyere until smooth. Season the sauce with salt, pepper, and nutmeg and scrape into a bowl.
- Uncover the lamb, arrange the shanks on a serving platter, and keep warm. Bring the sauce to a boil and cook until reduced to 11/2 cups, about 30 minutes.
- Pour the sauce through a fine sieve into a bowl and discard the solids. Spoon the sauce over the shanks and serve with the eggplant sauce.