Green Bean Casserole Calculator
Green bean casserole beans, soup, and onions for servings.
What it does
Green bean casserole scales by serving with three parts. Beans lead with soup and crispy onions behind.
The tool above multiplies servings out. Ten servings need 2.5 lb of beans with 1.25 cups of soup and 0.6 cups of onions. The metric match is 1.1 kg with 296 ml and 18 g.
Beans run a quarter pound each. Fresh need blanching while frozen and canned bake direct.
Soup runs an eighth cup each. Cream of mushroom binds classic.
Onions split the bake. Half inside, half crisped on top last.
How to use
- Pick imperial (lb, cups) or metric (kg, ml, g).
- Enter servings.
- Read beans first.
- Read soup next.
- Read onions and bake bubbly.
Formula
- servings
- Half cup servings to bake.
Metric runs kilos and ml with grams for onions. Servings are half cup portions.
Worked example
Example: 10 servings
Imperial defaults: 10 servings. These are also the default values, so the page opens on this answer.
- Servings: 10.
- Beans: 10 x 0.25 = 2.5 lb.
- Soup: 10 x 0.125 = 1.25 cups.
- Onions: 10 x 0.06 = 0.6 cups.
- Tool shows 2.5 lb beans, 1.25 cups soup, 0.6 cups onions.
Reference table
| Servings | Beans | Soup |
|---|---|---|
| 6 | 1.5 lb | 0.75 cups |
| 10 | 2.5 lb | 1.25 cups |
| 20 | 5 lb | 2.5 cups |
Limits
- Quantity math only. Bean types vary.
- Canned versus fresh timing differs.
- Dairy free needs soup swaps.
- Holding softens onions fast.
Common mistakes
- Watery frozen beans undrained.
- All onions baked soggy inside.
- No seasoning past salt.
- Shallow dish overflowing.
- Skipping the rest before serving.
Try it yourself
Quick checks. Answers sit tucked under each question.
20 servings?
Beans are 20 x 0.25 = 5 lb. Soup is 20 x 0.125 = 2.5 cups. Onions are 20 x 0.06 = 1.2 cups.
6 servings?
Beans are 6 x 0.25 = 1.5 lb. Soup is 6 x 0.125 = 0.75 cups.
Questions
Green beans?
Multiply servings by quarter pound. Here 10 x 0.25 = 2.5 lb.
Cream soup?
Eighth cup per serving. Here 10 x 0.125 = 1.25 cups soup.
Fried onions?
Six hundredths cup per serving. Here 10 x 0.06 = 0.6 cups onions.
Fresh or canned beans?
Fresh, frozen, or canned all bake; fresh needs blanching first.
All onions on top?
Yes. Half the onions bake in, half top last.
Dairy free?
No. Dairy free versions need soup swaps.