Oven-Roasted Pork Tenderloin with Apple and Fennel

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Juicy pork tenderloin roasted with sweet apples and fragrant fennel creates a balanced Whole30 entrée full of natural flavors and fall-inspired aromas. This american-inspired whole30 (whole30, gluten free) ready in about 45 minutes pairs pork tenderloin, large apple, cored and sliced, medium fennel bulb, sliced for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 360 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.

Prep: 10 min Cook: 35 min Serves 4 American cuisine 360 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F. Pat dry 1.5 lbs pork tenderloin and rub all over with 2 tbsp olive oil, 1 tsp sea salt, 1/2 tsp black pepper, 3 minced garlic cloves, and 1 tbsp chopped fresh rosemary.
  2. Step 2: Place pork in a roasting pan and arrange 1 large sliced apple and 1 medium sliced fennel bulb around it.
  3. Step 3: Roast uncovered for 25-30 minutes, turning apple and fennel slices once halfway, until pork reaches an internal temperature of 145°F and apples are tender.
  4. Step 4: Remove pork from oven and let rest for 5 minutes before slicing. Serve pork slices alongside roasted apple and fennel.

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Frequently asked questions

How long does Oven-Roasted Pork Tenderloin with Apple and Fennel take to make?

Total time is about 45 minutes (10 min prep + 35 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 Oven-Roasted Pork Tenderloin with Apple and Fennel?

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 pork tenderloin from drying out.

Can I substitute ingredients in Oven-Roasted Pork Tenderloin with Apple and Fennel?

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 Oven-Roasted Pork Tenderloin with Apple and Fennel 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 Oven-Roasted Pork Tenderloin with Apple and Fennel whole30?

Yes — this recipe is tagged whole30, gluten free, dairy free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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