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Beef Tenderloin over Lemony Spaghetti

Beef Tenderloin over Lemony Spaghetti

with Zucchini and Chili Flakes
Recipe Development Team
Recipe Development TeamUpdated on January 21, 2026
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Calories
720 kcal
Protein
40g protein
Difficulty
Easy
Allergens:
  • Wheat
Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts, and wheat.
serving amount

¼ cup

Parmesan Cheese

2 tablespoon

Sour Cream

1 unit

Zucchini

10 ounce

Beef Tenderloin Steak

1 unit

Chicken Stock Concentrate

1 unit

Lemon

1 clove

Garlic

1 tablespoon

Italian Seasoning

1 teaspoon

Chili Flakes

6 ounce

Spaghetti

(Contains: Wheat)

Not included in your delivery

1 tablespoon (tbsp)

Olive Oil

2 teaspoon (tsp)

Cooking Oil

/ per serving
Calories720 kcal
Fat27 g
Saturated Fat6 g
Carbohydrate72 g
Sugar8 g
Dietary Fiber5 g
Protein40 g
Cholesterol90 mg
Sodium290 mg
Potassium960 mg
Calcium60 mg
Iron6 mg
Due to the different suppliers we purchase our products from, nutritional facts per meal can vary from the website to what is received in the delivered box, depending on your region.
Large Pot
Zester
Strainer
Large Pan
Paper Towel

Cooking Steps

Prep
1

• Bring a large pot of salted water to a boil. Wash and dry produce. • Trim and quarter zucchini lengthwise; cut crosswise into ½-inch-thick pieces. Peel and mince garlic. Zest and quarter lemon.

Cook Pasta
2

• Once water is boiling, add spaghetti to pot. Cook, stirring occasionally, until al dente, 9-11 minutes. • Reserve 1 cup pasta cooking water, then drain. (Keep empty pot handy for step 5.)

Cook Zucchini
3

• While pasta cooks, heat a drizzle of olive oil in a large, preferably nonstick, pan over medium-high heat. Add zucchini; cook, stirring occasionally, until browned and softened, 4-6 minutes. Season with salt and pepper. • Turn off heat; transfer to a plate. Wipe out pan.

Cook Chicken
4

• Meanwhile, pat chicken* dry with paper towels and season all over with Italian Seasoning, salt, and pepper. • Once zucchini is done, heat a large drizzle of oil in same pan over medium-high heat. Add chicken; cook until browned and cooked through, 3-5 minutes per side. • Turn off heat; transfer to a cutting board to rest. • Once cool enough to handle, slice chicken crosswise.

Swap in beef for chicken; cook to desired doneness, 4-7 minutes per side. Let rest at least 5 minutes, then thinly slice crosswise

Make Sauce
5

• Heat a drizzle of olive oil in pot used for spaghetti over medium-high heat. Add garlic, half the lemon zest, and a pinch of chili flakes. Cook, stirring, until fragrant, 20-30 seconds. • Stir in ½ cup reserved pasta cooking water (¾ cup for 4 servings), stock concentrate, and juice from two lemon wedges (four wedges for 4). Simmer until thickened, 1-2 minutes. Turn off heat.

Finish & Serve
6

• Add drained spaghetti, zucchini, sour cream, and 1 TBSP butter (2 TBSP for 4 servings) to pot with sauce; toss to coat. • Add half the Parmesan and season with salt and pepper. TIP: If needed, stir in more reserved pasta cooking water a splash at a time until spaghetti is coated in a creamy sauce. • Divide pasta between bowls. Top with chicken, remaining Parmesan, remaining lemon zest, and a pinch of chili flakes if desired. Serve with any remaining lemon wedges on the side.

Customer reviews

Review summary

Updated on Dec 2025
  • Flavor: Many loved the buttery, lemony, parmesan taste of the pasta sauce. Some found it deliciously flavorful, while others wanted more lemon.
  • Ease of prep: Consider slicing the beef before cooking for easier preparation. Some found the recipe instructions clear and easy to follow.
  • Suggestions: Try adding extra zucchini for more veggies. Adjust lemon zest to taste; some prefer less, others want more lemony flavor.
  • Leftovers: The dish reheats well, with some reporting it tasted even better the next day.
  • Protein: The beef tenderloin was a popular upgrade, praised for its tenderness when cooked properly 🥩.
AI-generated from customer reviews