Brown beef in olive oil in a large heavy bottomed pot or dutch oven on the stove on all sides for 3 - 5 minutes.
Add salt and pepper.
Remove beef and place in slow cooker.
Add onions to pot on stove and saute on medium-high heat.
Add a can or bottle of beer to the onions.
Cook on high heat scraping the bottom of the pot to deglaze and remove all the bits of beef and allow the alcohol to burn off.
Remove the onion and beer mixture to the slow cooker.
Add carrots, potatoes and broth to slow cooker and cook on low for 4 hours.
After 4 hours if the meat is tender add the tomato paste and mix well.
Leave the lid off for 30 minutes to allow the stew to thicken.
Add parsley, stir and serve.
Notes
Many recipes use the classic Guinness dark beer but any kind of beer works with this recipe. I used a local lager beer and it gave the stew a nice flavor. However, if you don't like the taste of beer or are worried about alcohol leave it out and add an extra cup of broth.
Nutritional information is provided as a courtesy and is an estimate only. This information comes from online calculators. Although attempts have been made to provide accurate nutritional information, these figures are only estimates.