Select Page

Wonderful easy Make-Ahead Roasted Rosemary Potatoes for 50

Oven Roasted Potatoes

What’s not to like.

There’s no peeling, and just a bit of chopping.  You can make this up to 2 days in advance.  It re-heats beautifully. And the ultimate test of a great large group recipe?  I’ve had several people say, “Wow.  I’m going to make a smaller version of this for my family.”

Perfect.

You’ll be using two large (13 x 20 x 3) aluminum roasting pans for each batch to serve 50.  Here’s what they look like in one of the pans fresh from the oven.

Potatoes for a Large Group

You can also make these for a smaller crowd (like your family) on a sheet pan just as easily like I’ve done below.  They are FANTASTIC.  (Disclosure: I really love, love potatoes, so I’m not even remotely a fair judge.  But rumor has it, these are very good.)    The Family-sized recipe follows the Potatoes for 50 recipe.

Potatoes for a Large Group

I first made this recipe for the 150 person cast and crew of our church’s production of Savior of the World.  Three of us each made one batch (one batch uses two aluminum roasting pans) to serve 50.  That means for 150 servings we had 6 large (11 x 9 x 2 1/2 inch) heavy duty disposable aluminum roasting pans full of potatoes.  You can use a different size pan as long as you don’t use a deeper pan which will increase the cooking time.  If you are making more than 2 pans in one oven it will also increase the cooking time by about 15 – 20 minutes.

Multiple members of the cast and crew came back for seconds on the potatoes and when we were done there were none left.

Mission accomplished.

You can certainly use white or yellow onions if sweet are not available.  Often white or yellow onions are smaller than the sweet onions, so I’d pick up 3-4 more if you’re using white or yellow.

Pin for Later

Megs Breakfast Casserole

Or Make Now.

Oven Roasted Rosemary Potatoes for 50

 

5 from 2 votes
Roasted Potatoes and Onions
Roasted Potatoes and Onions for a Crowd
Prep Time
15 mins
Cook Time
1 hr
Total Time
1 hr 15 mins
 

Yield: 50 (4 to 5 oz.) servings 

Course: Side Dish
Cuisine: American
Servings: 50 people
Author: Betsy Edwards
Ingredients
  • 11 lbs Yukon Gold potatoes (or other yellow potatoes) cut in 1-inch chunks or wedges
  • 10 large onions , chop in large pieces, (you can use white, yellow or sweet)
  • 1/4 cup canola oil to coat vegetables
  • 2 tablespoons dried rosemary rough chopped
  • 2 tablespoons Kosher salt
  • 1 tablespoon garlic powder
  • 1 teaspoon black pepper
Special Equipment
  • 2 (11 x 9 x 2 inch) aluminum roasting pans
Instructions
  1. Instructions:
  2. Chop unpeeled potatoes and onions into large (1 inch sized) pieces.  

  3. Put chopped potatoes and onions in a very large aluminum roasting pan. Pour oil over the vegetables.  Toss the vegetables to coat them with the oil.

  4. Sprinkle the potatoes with kosher salt, rosemary, garlic powder and pepper. Toss again to distribute seasonings.  Roast at 350 degrees for an hour. Stir the vegetables two or three times during the hour.  When an inserted fork meets with no resistance the vegetables are done.

MAKE AHEAD NOTE:
  1. Can be made up to 2 days in advance, covered, and refrigerated.  When ready to serve reheat, UNCOVERED, in a roaster oven on high until hot (about 15 - 30 minutes), stirring several times - - - then REDUCE HEAT to low to hold for up to 2 hours.  

 

Family-sized Oven Roasted Rosemary Potatoes

5 from 2 votes
Roasted Potatoes
Oven Roasted Rosemary Potatoes - Family Sized
Prep Time
15 mins
Cook Time
45 mins
Total Time
1 hr
 
Course: Side Dish
Cuisine: American
Servings: 8 servings
Author: Betsy Edwards
Ingredients
  • 3 pounds Yukon Gold potatoes cut in 1-inch chunks or wedges
  • 2 large sweet onions chopped in large pieces
  • 1/4 cup vegetable oil
  • 2 teaspoons dried rosemary roughly chopped
  • 1/2 teaspoon garlic powder
  • 2 teaspoons kosher salt
  • 1 teaspoon fresh ground black pepper
Instructions
  1. Place a rimmed sheet pan in the oven and preheat oven to 400 degrees F.

  2. Cut the potatoes in half or quarters and place in a large bowl.  Peel and chop the onions in large pieces and add to the potatoes.

  3. Add the oil to the bowl with the potatoes and onions and toss until the vegetables are well coated.  Evenly sprinkle with the salt, pepper and rosemary and toss again to evenly distribute the seasonings.

  4. Carefully pour the vegetables onto the sheet pan and spread out into 1 layer.  At 15 minutes and again at 30 minutes, stir with a spatula to change sides of vegetables in contact with hot pan.

  5. Roast in the oven 45 minutes to 1 hour or until potatoes are fork tender, brown and crisp.  Remove the potatoes from the oven, season with salt to taste and serve hot.

Here’s some additional large group potato recipes.

Hash Browns for a large crowd

And everything you need for a successful Potato Bar.

Potato Bar for a large crowd

6 Comments

  1. Ann Plumb

    Could you make this in a large electric roaster? They would be stacked on one another. I would like to just cut them in half,so how would you adjust the cooking time?

    Reply
  2. Betsy Edwards

    Hi Ann,
    I’ve made these potatoes quite a few times (in this 1″ chunk format) and assigned them out to others as well. Everybody really likes these potatoes with folks often coming back for seconds. I’ve never tried them cut in half in a large electronic roaster, but I believe they would do fine. There are about 27-30 potatoes in a 10-pound bag of No. 1 potatoes. These should all fit in your roaster oven just fine. A half potato will cook in a regular oven at 400°F for about 30-40 minutes. Depending on your roaster oven I’m guessing it and will probably take between an 1 hour to 1 hour and 30 minutes to cook stacked and cut in halves.

    If I was going to cut them in half and cook them in a roaster oven, I would do the following:
    1. Make sure the inside surface of the roaster is well greased.
    2. Set your electric roaster to 400 degrees Fahrenheit. Add the prepped potato halves, making sure the potatoes don’t touch the sides so they don’t stick. Also don’t wrap them in foil to bake as this just steams the potato, makes the skin soggy and slows down the cooking process.
    3. Replace the roaster oven cover and set a timer for 1 hour (they may need up to an additional 30 – 45 minutes).
    4. Start testing them with a knife at the 1 hour mark. Once the internal temperature of the potato reaches 210 degrees F or a knife can be inserted with no resistance, they’re done.

    According to Dr Potato with the Idaho Potato Commission (https://idahopotato.com/dr-potato/baking-multiple-potatoes) 29 WHOLE potatoes will take about 1 hour and 45 minutes in a roaster. Since I don’t know the exact time for the half potatoes, if we’re off on the time, it would certainly impact your serving schedule one way or the other (under-done potatoes which are nasty or not eating on time, which is also unacceptable – especially if you’re serving a large group).

    BUT (good news) – one of the characteristics I strive for in all my Large Group recipes is its ability to hold without impacting the quality – and I know from experience these potatoes hold REALLY well. SO – – – what I would do is to assume they are going to take the full 1 hour and 45 minutes and start cooking them 2 hours before you’re due to serve them. That way in case they DO take the full 1 hour 45 minutes, you have plenty of time. If they take less than that, no problem! Simply remove the lid, REDUCE the roaster to LOW (200-225) and and let them sit uncovered, checking on them every 15-20 minutes.

    One other option: These can be made (in the chunk version) up to 2 days in advance, covered, and refrigerated. When ready to serve reheat, UNCOVERED, in a roaster oven on high until hot (about 15 – 30 minutes), stirring several times – – – then REDUCE HEAT to low to hold for up to 2 hours.

    Here’s a couple links which may be helpful if you’re serving a large group:
    https://www.alohadreams.com/serving-quantity-for-a-large-group/
    https://www.alohadreams.com/how-to-serve-a-large-group/

    I’d really love to hear how it turns out!
    Best wishes,
    Betsy

    Reply
  3. Diane

    Really great recipe. Thank you

    Reply
  4. cooper

    How do you reheat them in the oven? Not a slow cooker. How long and covered or uncovered?

    Reply
    • Betsy Edwards

      How many are you serving? It will impact my answer somewhat.

      Reply
  5. Tara C

    Thanks so much for sharing this recipe. The potatoes were DEE-LISH. I made them for church for our Easter brunch. Everyone loved them.

    Reply

Submit a Comment

Your email address will not be published. Required fields are marked *

Want more delicious large group recipes?

Hawaiian Slow Cooker Kalua Pork

Another great, super-easy make ahead recipe. 10 minutes work, overnight unattended low and slow cooking, and you’ve got mouthwateringly tender luau-style Kalua pork. Really easy. REALLY good!

Beach Baby Pudding Cups

These Beach Baby Coconut Pudding Cups are everything that's great about the islands! Kids LOVE ‘EM. You will too since they are so easy to make.

Hawaiian Pineapple Cheesecake Bars

Even people who don’t like pineapple or coconut take a bite and say “WOW!” Treat yourself to a mini trip to Hawaii with these luscious Hawaiian Pineapple Cheesecake Bars.

Hawaiian Wedding Cake

Looking for a quick and easy treat? This Hawaiian Wedding Cake comes together in a snap and tastes like a piña colada on your plate.

Page 1 of 712345...Last »
Aloha Dreams

Welcome to Aloha Dreams!

I'm so glad you dropped by.  I'm Betsy.  Here you'll find my favorite fabulous, trusted recipes - everything from delicious, quick meals for your family to wonderful classics made easy.

I'm also here to help you with large group recipes from 20 to 200.  So next opportunity you get to cook for a large group - Say 'Yes!'  Then relax. I've got your back.

Ever wished you could build your dream home? How about building your dream home in a tropical paradise?  Join me, room by room, as we design and build a fabulous dream home in Hawaii!

Explore Aloha Dreams

Things to do Big Island of Hawaii
Dream Home Bathroom

EXPLORE

If you're planning a vacation to Hawaii, I've got you covered on the very best places to go!   From many amazing restaurants to incredible adventures in the surf and on land, this is your go-to source for unique and exciting things to do on the Big Island of Hawaii.  Or just take a Virtual Vacation!!    Let's go!

SAY YES!

If you've been asked to cook for a large group activity, be it a Girl's Camp or a Graduation Party, say Yes!  I'm here to help.  From Menus to Game Plans to Recipes, I'll help you keep on schedule and turn out amazingly delicious food if you're cooking for a crowd!  My recipes are tested and trusted.    Let's cook! 

AHONUI

Ever wished you could build your dream home?  Like amazing house design and home building ideas?  Me too!  Join me as I design and build a home on the Big Island of Hawaii. Follow along while I design each room. Enjoy a front row seat for the entire amazing construction process.  Let's play!

PARTY

Would you like to throw a Luau, but not sure where to start?   Want to know how to build a tiki bar and roast a pig?  Here's everything you need to have a luau.  How about a Christmas Feast or even a fabulous dinner for your neighborhood supper club?  You've come to the right place.    Let's party!

Enjoy this blog? Please spread the word :)

Tropical Salad

Never miss a single Fabulous Recipe!

Sign UP today and ENJOY free Recipes & Party Ideas in your inbox.

(No spam - I promise!)

You have Successfully Subscribed!