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- 2 Tbsp. coconut oil
- 6 oz. fresh shitake mushrooms
- 1 small onion
- 2 tsp. minced fresh ginger
- 5 c. beef bone broth
- 2 Tbsp. coconut aminos
- 2 tsp. Red Boat fish sauce
- 1 tsp. salt
- 2 medium zucchini
- 12 oz. boneless beef sirloin steak
- fresh Thai basil leaves (optional)
- fresh cilantro (optional)
- sliced green jalapenos (optional)
- sliced green onions (optional)
- lime wedges (optional)
- Step 1In a large pot, heat the coconut oil over medium heat. Add the onion and cook, stirring, until softened, about 2 minutes. Add the mushrooms and cook, stirring, for about 3 minutes.
- Step 2 Add the garlic and ginger and cook, stirring, until fragrant, about 30 seconds. Add the broth, coconut aminos, fish sauce, and salt.
- Step 3Bring to a boil; reduce the heat to medium-low and simmer, uncovered, for 5 minutes.
- Step 4Meanwhile, use a spiral slicer or julienne peeler to cut the zucchini lengthwise into long, thin strands (or use a regular vegetable peeler to cut the zucchini lengthwise into thin ribbons).
- Step 5Add the zucchini noodles to the simmering soup and cook until just tender, about 2 minutes.
- Step 6Add the sliced steak and simmer until just cooked, 30 to 60 seconds. Ladle the soup into bowls and serve with the toppings of your choice.
TIP: Freeze the steak for 15 minutes for easier slicing.
Text excerpted from THE WHOLE30 COOKBOOK © 2016 by Melissa Hartwig. Reproduced by permission of Houghton Mifflin Harcourt. All rights reserved.

Melissa Matthews is the Health Writer at Men's Health, covering the latest in food, nutrition, and health.