How Much Beef Tenderloin Do You Need for 15 Adults?

Planning a special meal for a group of adults can feel overwhelming, especially when it comes to serving the perfect cut of beef. Beef tenderloin is a classic choice for gatherings, celebrations, and holidays—its tenderness and flavor make it a crowd-pleaser. But how much beef tenderloin do you really need to satisfy 15 adults? In this guide, we’ll walk you through everything you need to know to confidently plan your menu, from portion sizes and trimming tips to side dish suggestions and expert advice for a stress-free event.

How Much Beef Tenderloin Per Person?

The first step in planning your meal is figuring out how much beef tenderloin to serve each guest. The recommended serving size for beef tenderloin is:

• Untrimmed beef tenderloin: 8-10 ounces per adult
• Trimmed (ready-to-cook) beef tenderloin: 6-8 ounces per adult

Trimming removes the silverskin and excess fat, so you’ll lose some weight in the process. If you’re buying a whole, untrimmed tenderloin, plan on purchasing a bit more to account for this loss.

Quick Calculation for 15 Adults

• Untrimmed beef tenderloin: 8-10 oz x 15 = 7.5 to 9.5 pounds
• Trimmed beef tenderloin: 6-8 oz x 15 = 5.5 to 7.5 pounds

If you want generous portions or expect big appetites, lean toward the higher end of these ranges.

What Affects Portion Size?

There’s no one-size-fits-all answer because several factors can influence how much beef tenderloin your guests will eat:

• Appetites: Some groups eat more than others! If your guests are big meat lovers or you’re hosting a special occasion, plan on larger portions.
• Other Dishes: Serving plenty of hearty sides, appetizers, or a multi-course meal? You can get away with smaller portions of beef tenderloin.
• Leftovers: If you love leftovers, buy extra! Leftover beef tenderloin makes amazing sandwiches or salads.
• Slicing Style: Slicing thinly for buffet-style service stretches the meat further than thick steak-like cuts.

Buying Tips: Whole vs. Pre-Trimmed Beef Tenderloin

You’ll see two main options at the butcher or grocery store:

• Whole (untrimmed) tenderloin: Usually less expensive per pound but requires trimming at home. You’ll lose about 1-1.5 pounds per whole tenderloin during trimming.
• Pre-trimmed (peeled) tenderloin: More expensive, but all the work is done for you. What you buy is what you cook and serve.

If you’re comfortable trimming meat, buying whole is budget-friendly. Otherwise, pre-trimmed saves time and effort.

How to Trim Beef Tenderloin (If Doing It Yourself)

1. Remove the silverskin: This tough membrane doesn’t break down when cooked. Use a sharp knife to slide under the silverskin and peel it away.
2. Trim excess fat: Take off any large sections of fat, but leave a thin layer for flavor if you like.
3. Tuck the tail: The narrow end (tail) cooks faster than the thick end. Tuck it under and tie with butcher’s twine for even cooking.

Cooking Tips for Perfect Beef Tenderloin

This cut is prized for its tenderness and mild flavor, so it’s best cooked simply to let the meat shine. Here are some tried-and-true tips:

• Bring to room temperature: Let the beef sit out for 30-60 minutes before roasting for even cooking.
• Season generously: Salt, pepper, garlic, and fresh herbs are classic choices.
• Sear first (optional): Searing in a hot pan before roasting adds a flavorful crust.
• Roast until desired doneness: Use a meat thermometer for accuracy:
  • Rare: 120-125°F
  • Medium-rare: 130-135°F (most popular)
  • Medium: 140-145°F
• Rest before slicing: Let the roast rest for at least 15 minutes so juices redistribute.

The Best Side Dishes for Beef Tenderloin

A great main course deserves delicious sides! Here are some classic pairings that complement beef tenderloin beautifully:

• Roasted or mashed potatoes
• Sautéed green beans or asparagus
• Creamed spinach
• Mushroom gravy or red wine sauce
• Crisp salad with vinaigrette
• Bread or dinner rolls

Serving Suggestions & Presentation Tips

• Slicing: Slice the tenderloin across the grain into medallions or thicker steaks, depending on preference and presentation style.
• Buffet style: For large groups, slicing thinly and arranging on a platter makes serving easy and stretches portions.
• Sauces: Offer a simple sauce like horseradish cream, béarnaise, or au jus on the side.

FAQ: Beef Tenderloin for a Crowd

Can I cook beef tenderloin ahead of time?

You can roast beef tenderloin in advance and serve it at room temperature, which is ideal for buffets or parties. Slice just before serving and keep covered to retain moisture.

What if I have leftovers?

Leftover beef tenderloin is delicious in sandwiches, wraps, salads, or as a protein addition to pasta dishes. Store leftovers tightly wrapped in the refrigerator for up to 3 days.

How do I reheat beef tenderloin without drying it out?

The best way is to gently warm slices in a covered dish with a splash of broth in a low oven (about 250°F) until just heated through.

I have guests who eat less meat. Should I adjust?

If you know some guests prefer smaller portions or are light eaters, you can reduce your total amount slightly—but it’s always safer to have a little extra just in case!

Can I freeze cooked beef tenderloin?

Yes! Wrap leftovers tightly in foil and place in an airtight container before freezing. Thaw overnight in the fridge and reheat gently for best results.

Your Step-by-Step Shopping Guide

1. Decide if you want whole or pre-trimmed tenderloin.
2. If buying whole: Plan on 8-10 oz per person (about 7.5-9.5 lbs for 15 adults).
3. If buying trimmed: Plan on 6-8 oz per person (about 5.5-7.5 lbs for 15 adults).
4. Add a little extra if you want leftovers or expect big appetites!
5. Select your favorite sides and sauces to round out the meal.

The Bottom Line

If you’re serving beef tenderloin to a group of 15 adults, aim for about 8-10 ounces per person (untrimmed), or 6-8 ounces per person (trimmed). Adjust up if your guests are big eaters or you want leftovers. With these tips and tricks, you’ll be ready to serve up a memorable meal that everyone will love!

Enjoy your celebration—and don’t forget to savor every bite!