Garlic-Butter Prime Rib with Horseradish Cream Sauce

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Juicy prime rib infused with garlic butter and served alongside a tangy horseradish cream sauce for a balanced and festive meal. This american-inspired christmas ready in about 110 minutes pairs prime rib roast, unsalted butter, garlic cloves, minced for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 580 calories and feeds 6, 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.

★ 4.2 (15 ratings) Prep: 15 min Cook: 95 min Serves 6 American cuisine 580 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 450°F. In a small saucepan, melt 6 tablespoons unsalted butter with 5 minced garlic cloves over low heat until fragrant, about 2 minutes.
  2. Step 2: Pat dry 4 lbs prime rib roast, then season all over with 1 tablespoon kosher salt and 1 tablespoon black pepper.
  3. Step 3: Brush the garlic butter mixture generously over the entire surface of the roast.
  4. Step 4: Place the roast on a roasting rack in a pan and roast in the oven for 20 minutes to sear.
  5. Step 5: Reduce the oven temperature to 350°F and continue roasting for 1 hour 15 minutes, or until the internal temperature reaches 135°F for medium rare.
  6. Step 6: Remove the roast from the oven and tent with foil; let rest for 15 minutes.
  7. Step 7: Meanwhile, combine 1/2 cup sour cream with 2 tablespoons prepared horseradish and 1 teaspoon lemon juice in a bowl; mix well.
  8. Step 8: Slice the rested prime rib and serve with the horseradish cream sauce on the side.

Frequently asked questions

How long does Garlic-Butter Prime Rib with Horseradish Cream Sauce take to make?

Total time is about 110 minutes (15 min prep + 95 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 Garlic-Butter Prime Rib with Horseradish Cream Sauce?

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 prime rib roast from drying out.

Can I substitute ingredients in Garlic-Butter Prime Rib with Horseradish Cream Sauce?

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 Garlic-Butter Prime Rib with Horseradish Cream Sauce for a different number of people?

The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). 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 Garlic-Butter Prime Rib with Horseradish Cream Sauce?

American christmas 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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