Beef & Fennel Soup with Lemon Zest
A light yet satisfying soup featuring slow-cooked beef, aromatic fennel, and bright lemon zest, perfect for a healthy and comforting meal. This american-inspired slow cooker (whole30) ready in about 500 minutes pairs grass-fed beef stew meat, large fennel bulb, medium carrots for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 500 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 1.5 lbs grass-fed beef stew meat
- 1 large fennel bulb
- 2 medium carrots
- 2 celery stalks
- 3 garlic cloves
- 1 tsp dried thyme
- 1 bay leaf
- 1 tbsp olive oil
- 1 tsp salt
- 1/2 tsp black pepper
- 3 cups beef broth
- 1 tsp lemon zest
Instructions
- Step 1: Heat 1 tbsp olive oil in a large skillet over medium-high heat. Season 1.5 lbs cubed beef stew meat with 1 tsp salt and 1/2 tsp black pepper, then sear in batches for 3-4 minutes per side until browned.
- Step 2: Transfer seared beef to slow cooker. Add 1 large diced fennel bulb, 2 diced medium carrots, 2 diced celery stalks, 3 minced garlic cloves, 1 tsp dried thyme, and 1 bay leaf.
- Step 3: Pour 3 cups beef broth over all ingredients, then add 1 tsp lemon zest. Stir to combine. Cover and cook on LOW for 8 hours or HIGH for 4 hours, until beef is tender and fennel is soft. Discard bay leaf before serving.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Beef & Fennel Soup with Lemon Zest take to make?
Total time is about 500 minutes (20 min prep + 480 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover Beef & Fennel Soup with Lemon Zest?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep grass-fed beef stew meat from drying out.
Can I substitute ingredients in Beef & Fennel Soup with Lemon Zest?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Beef & Fennel Soup with Lemon Zest for a different number of people?
The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
Is Beef & Fennel Soup with Lemon Zest whole30?
Yes — this recipe is tagged whole30 based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
What others are saying
- ★★★★★
Brought this to a potluck and it was the first dish to disappear.
- ★★★★☆
Almost perfect — just needed a squeeze of lemon at the end.
- ★★★☆☆
Okay for a quick meal. I've had better slow cooker dishes though.
