Heat a large skillet or wok over medium heat and add the butter and olive oil. Once it’s melted, stir in the onions, garlic, salt and pepper. Stir and cook for 5 minutes, until slightly softened. Add in the beer and honey, stirring to combine. Add the mussels and toss. Cover the skillet and cook just until the mussels open and the beer is simmering, about 5 to 6 minutes. Garnish with the bacon and cilantro. Stir the mussels well so the broth makes it into the shells. Serve immediately with the baguettes.