Place the baking sheet in the oven and roast the asparagus for 8 minutes. Remove from the oven and spoon the honey Gorgonzola mixture over the asparagus spears, then top with the chopped walnuts.
Heat oil in a large skillet over medium-high heat. Add beef cubes and brown for 1 to 2 minutes per side. Place browned beef and all remaining ingredients in a slow cooker and stir to combine.