Place all cut vegetables into slow-cooker along with the parsley and thyme.
Cut Eye Round into 1” cubes, if using stew beef no cutting necessary.
Cut bacon into ½” pieces and place in hot pan. Cook for 5-7 minutes, stirring frequently.
Once bacon is crispy, remove and place on top of vegetables in the slow-cooker. Keep bacon fat in pan on medium heat.
Mix buckwheat flour, salt and pepper in a bowl. Dredge beef cubes in flour mixture.
Sear cubes on all sides for 2 minutes per side. For a good sear, don’t overcrowd the pan, and sear in two batches if necessary.
Placed beef on top of vegetables and bacon.
Deglaze the pan with beer, scraping any meat off bottom of pan.
Add beef stock to pan and bring to a simmer.
Pour liquid into slow-cooker, over the beef and vegetables.
Cover slow-cooker and cook on high setting for 7-8 hours or low setting for 12-14 hours. Stir halfway through cooking time, but not necessary.