Dijon and Cognac Beef Stew

4 tablespoons butter

1 large onion, finely diced
3 shallots, chopped
1 to 1 1/2 pounds beef chuck, in 1-inch cubes
2 tablespoons flour
Salt and freshly ground black pepper
1/2 cup Cognac
2 cups unsalted beef stock
1/4 to 1/2 cup Dijon mustard
4 medium carrots, peeled and cut into half-moon slices

3 to 4 large yellow potatoes, peeled and cut into 1-inch cubes
1/2 pound mushrooms, stemmed, cleaned and quartered

Melt 2 tablespoons butter in a Dutch oven or a large heavy pot over medium-low heat.  Add onion and shallots. Cook until softened but not browned, about 10 to 15 minutes. Use a slotted spoon to transfer to a large bowl.

Add 2 more tablespoons butter to the pan. Dust beef cubes with flour, and season lightly with salt and more generously with pepper. Shake off excess flour, and place half the cubes in the pan. Cook over medium-high heat until well browned, almost crusty, on all sides, then transfer to the bowl with onions. Repeat with remaining beef.

Add Cognac to the empty pan, and cook, stirring, until the bottom is deglazed and any crusted-on bits come loose. Add stock and Dijon mustard. Whisk to blend, then return meat and onion mixture to pan. Lower heat, cover pan partway, and simmer gently until meat is very tender, about 1 1/4 hours.

Add carrots, and continue simmering for 20 minutes. Add the potatoes and cook for another 20 minutes, or until both carrots and potatoes are tender.  

As the stew cooks, heat 2 tablespoons butter in medium skillet over medium-high heat, and sauté mushrooms until browned and tender. When carrots and potatoes are tender, stir mushrooms into stew. Simmer 5 minutes, then taste, and adjust seasoning. Serve hot.

Serves 4.

From Regina Schrambling in the New York Times, via Smitten Kitchen, with a few changes