Add the beef stew meat, onion, carrots, garlic, diced tomatoes, beef broth, herbes de Provence, salt, and pepper to the crockpot. Stir once to combine.
Cover and cook on low for 7 hours.
Stir in the zucchini slices. Cover and cook for 1 more hour until the zucchini is tender but not falling apart.
Stir in the green olives right before serving. Taste and adjust salt if needed.
Notes
Taste the broth before adding extra salt because the olives release quite a bit on their own. If you want a thicker sauce, remove the lid for the last 30 minutes. Leftovers reheat well the next day and the zucchini holds up better than expected.Course: Main Course
Cuisine: French
Equipment: Slow Cooker, Knife, Cutting Board