Prepare the Beef
Pat the beef dry with paper towels.
Heat olive oil in a large skillet over medium-high heat.
Brown the beef cubes on all sides (about 3-4 minutes per side).
Remove beef from skillet and set aside.
Sauté Vegetables
In the same skillet, add onions and garlic. Sauté until softened (about 3-4 minutes).
Add carrots and celery, sautéing for an additional 2-3 minutes.
Combine in Slow Cooker
Place browned beef in the bottom of your slow cooker.
Add sautéed vegetables on top of the beef.
Pour in beef broth and red wine (if using).
In a small bowl, whisk together flour and 1/4 cup water to create a slurry. Pour over the stew.
Add salt, pepper, paprika, thyme, and bay leaf.
Cook
Cover and cook on low for 7-8 hours or on high for 3-4 hours, until beef is tender.
About 30 minutes before serving, prepare the herbed dumplings.
Prepare Dumplings
In a mixing bowl, combine flour, baking powder, and salt.
Cut in cold butter until mixture resembles coarse crumbs.
Stir in Parmesan cheese, parsley, and chives.
Add milk and mix until just combined.
Add Dumplings
Drop dumpling mixture by tablespoonfuls onto the surface of the stew.
Cover and cook on high for an additional 20-25 minutes, until dumplings are cooked through.
Serve
Remove bay leaf before serving.
Garnish with fresh parsley.
Serve hot with crusty bread if desired.