Position a rack in the center of the oven and heat the oven to 325°F.
Put the crumbs on a large rimmed baking sheet, toss with 1 Tbs. of the oil, and salt and pepper to taste. Toast until light golden and crisp, about 5 minutes. Let cool completely.
In a 6-quart Dutch oven or heavy-duty pot, heat 1 Tbs. of the oil on medium-high heat until shimmering. Add the ground beef, breaking it up with the back of a wooden spoon. Cook the beef, stirring occasionally and continuing to break up the meat, until it is dark brown and there is very little liquid left in the pan, about 12 minutes. Transfer to a plate with a slotted spoon.
Reduce the heat to medium, add the remaining 1 Tbs. oil to the pot, and heat until shimmering. Add the onion and cook until golden brown, about 10 minutes. Stir in the garlic, coriander, paprika, cumin, and Espelette pepper and cook until fragrant, about 1 minute. Pour in the wine and, using a wooden spoon, scrape up the brown bits on the bottom of the pot; cook until the liquid is reduced by half, about 5 minutes.
Add the ground beef back to the pot, along with any juices. Add the tomatoes and 1/2 cup of the broth and bring to a boil, stirring frequently and crushing the tomatoes with the back of the spoon. Reduce the heat to a simmer and partially cover the pot with the lid. Simmer for 2 to 4 hours, stirring occasionally and adding the remaining chicken broth ½ cup at a time to replenish the evaporated liquid if the meat becomes dry. The ragù should be thick but pourable. Simmer uncovered for the last 1/2 hour, stirring frequently, and season to taste with salt and pepper. Remove from the heat and stir in the butter until it is completely melted.
Meanwhile, bring a large pot of well-salted water to a boil. Add the pasta and cook according to the package directions until al dente.
To serve, transfer the cooked pasta to a large serving bowl. Add 1 cup of the ragù to the pasta and toss. Top with the remaining ragù and dollop with heaping tablespoons of the ricotta. Garnish with the arugula, breadcrumbs, and oregano. Serve with the Parmigiano on the side.
Photo: Scott Phillips
Recipe adapted from Moveable Feast with Fine Cooking.