01 - 
                Chop the onions into quarters, cut the carrots into large chunks, and halve the potatoes.
              
              
              
                02 - 
                Heat oil in a skillet over medium-high heat and brown each side of the chuck roast for about 4 minutes per side until an even golden crust forms.
              
              
              
                03 - 
                Arrange the quartered onions in the bottom of the slow cooker, followed by the carrots and potatoes.
              
              
              
                04 - 
                Generously season both sides of the seared roast with salt, pepper, thyme, and rosemary, then place it atop the vegetables in the slow cooker.
              
              
              
                05 - 
                Pour the beef broth evenly over the meat and vegetables until just covered. Cover with the lid.
              
              
              
                06 - 
                Cook on low for approximately 8 hours or on high for about 4 hours, until the roast is tender and the vegetables are cooked through.