In the slow cooker, add the beef stew meat and season with salt and pepper.
Add the sliced carrots, diced potatoes, chopped onion, and minced garlic on top of the beef.
In a separate bowl, whisk together the beef broth, tomato paste, thyme, rosemary, and bay leaf. Pour the broth mixture over the vegetables and beef in the slow cooker.
Cover and cook on low for 7-8 hours or on high for 4-5 hours, until the beef is tender.
About 30 minutes before serving, prepare the dumplings. In a large bowl, mix the flour, baking powder, and salt.
Stir in the milk and melted butter until just combined; do not overmix.
Remove the lid from the slow cooker and drop spoonfuls of the dumpling mixture on top of the stew. Cover and cook on high for an additional 30 minutes, or until the dumplings are fluffy and cooked through.
If using, stir in the frozen peas during the last 5 minutes of cooking.
Remove the bay leaf and serve the stew in bowls, topping with fresh parsley for garnish.
Notes
Add frozen peas for extra color and flavor if desired.