Asparagus and Red Pepper with Balsamic Vinegar Recipe

Melt the butter with the olive oil in a large skillet over medium heat; add the asparagus and red onion in the mixture season with salt and cook until the onion begins to soften about 5 minutes. Stir the red bell pepper into the mixture and continue cooking until the onions begin to caramelize another 5 minutes. Remove from heat and add the vinegar Parmesan cheese sesame seeds and pine nuts; toss to combine.