Kefir-Marinated Pork Tenderloin with Apple

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

Tender pork tenderloin marinated in tangy kefir and apple, roasted to juicy tenderness with a subtle sweetness. This french-inspired grilling ready in about 55 minutes pairs pork tenderloin, plain kefir, honey for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 300 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: 30 min Cook: 25 min Serves 4 French cuisine 300 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 375°F (190°C) and place a wire rack in a roasting pan.
  2. Step 2: In a bowl, mix 1/2 cup plain kefir, 2 tbsp honey, 1 tbsp dijon mustard, and 2 minced garlic cloves until combined.
  3. Step 3: Place 1.5 lb pork tenderloin on the wire rack and coat evenly with the kefir marinade.
  4. Step 4: Scatter 1 medium diced apple over the pork and drizzle any remaining marinade over the top.
  5. Step 5: Roast for 25-30 minutes until the pork reaches 145°F (63°C) internally, then let rest for 10 minutes before slicing.

Frequently asked questions

How long does Kefir-Marinated Pork Tenderloin with Apple take to make?

Total time is about 55 minutes (30 min prep + 25 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 Kefir-Marinated Pork Tenderloin with Apple?

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 Kefir-Marinated Pork Tenderloin with Apple?

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 Kefir-Marinated Pork Tenderloin with Apple 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.

What goes well with Kefir-Marinated Pork Tenderloin with Apple?

French grilling like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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