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1
Preheat the oven to 275u00b0F.
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2
Season half the beef with salt and pepper, and then dredge in the flour. Shake off excess flour. Add olive oil to a large dutch oven over medium-high heat and brown beef cubes. Using a slotted spoon transfer the beef to a plate. Repeat with the remaining beef.
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3
De glaze pan with 1 cup of broth then pour all back into broth container.
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4
Melt the butter over medium-high heat; add the onions and cook, stirring until lightly browned. Add the garlic and cook, stirring, until fragrant about 1 minute. Add the tomato paste and cook, stirring, until lightly browned, about 1 minute. Return the beef to the pot and add the broth and wine, and bring to a simmer.
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5
Stir in Dijon mustard and add bay leaves. Season to taste with salt and pepper. Cover and transfer to the oven. Stew the meat until tender, about 1-1/2 hours.
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6
Remove from the oven and skim the fat from the cooking liquid. Add the potatoes, carrots, celery, and the tomatoes with juice, and bring to a simmer. Stew uncovered, on top of stove, skim and stir occasionally, until liquid has thickened and the beef and vegetables are tender, about 1 hour. Remove the bay leaves, season to taste and serve.