In the slow cooker, combine the chopped onion and round steak cubes.
In a bowl, mix together the black pepper, garlic salt, paprika, and all-purpose flour.
Pour this mixture over the onions and steak in the slow cooker, and toss to coat the meat evenly.
Add the bay leaf and diced tomatoes.
Cover the slow cooker and cook on low for 8 to 10 hours, or until the steak is tender.
Remove the bay leaf from the goulash and stir in the sour cream.
Switch the slow cooker to high and cook for an additional 15 minutes.
While the goulash is finishing, cook the elbow macaroni according to the package instructions.
Serve the slow cooker round steak goulash hot over the cooked elbow macaroni.
Notes / Tips / Wine Advice:
Wine Advice:
This hearty goulash pairs well with a medium-bodied red wine such as a Zinfandel or a Shiraz. The bold flavors of the meat and spices are complemented by the fruity and peppery characteristics of these wines. For a non-alcoholic option, consider serving with a sparkling water infused with a splash of lemon or lime juice.