For best results, use Breville's Fast Slow Pro™ combination pressure and slow cooker

In a large bowl, toss the beef with the salt and pepper to coat evenly

Select SEAR and preheat the cooking bowl. Heat the olive oil until shimmering then add half the beef and brown on all sides, 3 to 4 minutes. Transfer to a bowl. Repeat with the remaining beef and transfer to the bowl

Add the onions and cook until softened, about 5 minutes. Add the white wine and bring to a simmer, stirring to scrape up the browned bits. Cook until reduced by almost half, 5-7 minutes

Whisk in the Dijon mustard. Return the beef and its juices to the cooking bowl, along with the tomatoes, garlic and bouquet garni

Select PRESSURE COOK or SLOW COOK CASSEROLE

When cooking has completed, open the lid and transfer the beef, tomatoes and onions to a serving bowl. Select REDUCE and desired heat level. Skim any fat off the top and cook until sauce thickens to desired consistency, about 5 minutes

Pour the sauce over the beef, top with chopped flat leaf parsley and serve immediately