Cooking for a crowd

Brown Sugar Pecan Slice-and-Bake Shortbread for 24

These are estimates. They come from rules of thumb, not a recipe we tested at this size. Go by the recipe's own doneness cues and a thermometer, and taste as you go.

The plan

It makes 40 as written, enough for 24.

The recipe serves 40. How it cooks: sheet pans.

Good to know

  • As written it makes 40 servings, enough for 24. No scaling needed.

Ingredients for about 40

The recipe as written.

  • ¾ cup pecans, about 85 g
  • 1 cup unsalted butter, softened (227 g)
  • ¾ cup brown sugar, packed (160 g)
  • 1 tsp vanilla extract
  • ½ tsp kosher salt
  • 2 ¼ cups all-purpose flour, spooned and leveled (280 g)
  • 3 tbsp turbinado sugar, for rolling

Rounded to kitchen measures. Eggs are rounded up to whole eggs.

Keeping a big batch safe

Back to the recipe More recipes for a crowd

How we work it out

  1. How it cooks decides how it grows. Baked dishes and casseroles are made as separate batches of the recipe as written, one pan's worth at a time. Soups, stews and chili go in one bigger pot, or several. Slow cooker and pressure cooker recipes get one batch per cooker or per round. Roasts become more roasts, not a bigger one. Skillet, griddle, grill and fried recipes cook in rounds.
  2. Pans and the oven. We assume a home oven with two racks, two baking dishes or cake pans per rack, or one sheet pan per rack. More pans than that means another round in the oven.
  3. Pots. The volume comes from the weight of the ingredients (about a liter for each kilogram; dry pasta, rice and grains count 2½ times, since they soak up water), in a pot no more than 3/4 full.
  4. What we don't simply multiply. Salt: add 3/4, taste, then the rest. Cayenne, chiles and hot sauce: start with 2/3. Ground spices and dried herbs: start with 3/4 once it's 3 batches or more. Bay leaves and other whole spices: about half the extra. Baking soda, baking powder and yeast: batch by batch. Frying oil and the water for boiling: by the pot, not the recipe. A big pot of soup or stew: hold back a tenth of the liquid.
  5. Timing. Each extra batch adds about 3/4 of the recipe's prep time. A big pot takes about 3 more minutes per extra quart to come to a simmer on one burner. Meat browns in batches no bigger than the recipe's. A full oven bakes a little slower: swap and turn the pans halfway, and allow 5 to 10 minutes more.

These are our rules of thumb, not tests of each recipe at each size. The recipe's own doneness cues and a thermometer come first.