How to Make It
Light a grill. In a medium saucepan of salted boiling water, blanch the sweet potatoes for 3 minutes; drain well.
In a large skillet, heat the oil. Add the bacon and cook over moderate heat until crisp, 4 to 5 minutes. With a slotted spoon, transfer the bacon to paper towels to drain. Add the onions to the skillet and cook over moderate heat until browned, about 12 minutes. Add the sweet potatoes and cook over moderate heat, stirring occasionally, until just tender, about 15 minutes. Increase the heat to high and cook without stirring until browned on the bottom, about 2 minutes. Stir in the bacon, parsley, chives and thyme; season with salt and pepper.
Meanwhile, season the steaks generously with salt and pepper and grill over high heat until nicely browned outside and medium-rare within, about 4 minutes per side. Let rest for 5 minutes, then serve with the sweet potato hash browns.
If you want to cook 2-inch-thick steaks like the one pictured, grill the meat over medium-high heat, turning every 5 minutes, until browned outside and an instant-read thermometer inserted into the center registers 130° for medium-rare, about 25 minutes total.