Season roast beef pieces generously with the seasoning blend of your choice
Heat oil in searing slow cooker (or in frypan on stove)
Sear/seal beef on each side (5-10mins total)
Turn slow cooker down from searing to LOW. If using a fry pan return beef to slow cooker at this point.
Add wine and turn beef through wine
Add potatoes, sweet potato, and carrot around meat and begin an 8hr cooking time on LOW.
After 2hrs add onion and pumpkin wedges also around meat and continue to cook on LOW.
1hr prior to completion of cooking time add sprouts around the beef and lay asparagus on top of beef.
After 8hrs cooking time has completed test vegetables with a fork to ensure all cooked to tender (you will notice 1-2 inches of fluid has released from your meat by now, which is why none is added to begin with)
Remove roast beef and allow to rest for a few minutes before carving
Gently remove vegetables to serving plates.
Enjoy with gravy of your choice