The lowest-sugar kids bars are RXBAR Kids (0g added sugar, date-sweetened), Larabar Kid (0g, date-and-nut base), That's It Mini bars (0g, fruit only), and 88 Acres Seed Bars (3g, nut-free for schools). Mainstream kid granola bars (Nature Valley, Quaker Chewy, Clif Kid ZBar) average 7–12g added sugar per bar and aren't on this list.
The 20 lowest-added-sugar bars in our catalog — every product here has 3g or less added sugar per serving, ranked ascending. Average recorded added sugar in our bars catalog pool is 2.6g. The American Heart Association recommends kids ages 2–18 keep added sugar under 25g per day.
Recorded values per serving; portions differ. Missing data is shown as unknown. Open a product for ingredients and source details.
Swipe across to compare sugar and tiers.
| Brand | Product | Serving | Added sugar | Total sugar | Tier | Source & recorded check |
|---|---|---|---|---|---|---|
| Magic Spoon | Marshmallow Treats | 1 bar (40g) | 0g | 1g | No added sugar· B | Manually entered label data |
| Once Upon a Farm | Mixed berry soft baked bar | Not recorded | 0g | 12g | No added sugar· B | Open Food FactsCheck date not recorded |
| Once Upon a Farm | Organic Oat Bar | Not recorded | 0g | 11g | No added sugar· B | Open Food FactsCheck date not recorded |
| Once Upon a Farm | Organic Refrigerated Fruit Bar Strawberry | Not recorded | 0g | 11g | No added sugar· B | Open Food FactsCheck date not recorded |
| Once Upon a Farm | Organic Refrigerated Oat Bar Apple Cinnamon | Not recorded | 0g | 12g | No added sugar· B | Open Food FactsCheck date not recorded |
| Once Upon a Farm | Organic Refrigerated Oat Bar Banana Chocolate | Not recorded | 0g | 5.4g | No added sugar· B | Open Food FactsCheck date not recorded |
| Once Upon a Farm | Organic Soft-Baked Bar Mixed Berry | Not recorded | 0g | 12g | No added sugar· B | Open Food FactsCheck date not recorded |
| Once Upon a Farm | Soft Baked Bar : Apple and Oat | Not recorded | 0g | 12g | No added sugar· B | Open Food FactsCheck date not recorded |
| Once Upon a Farm | TRACTOR WHEELS Organic Toddler Soft-Baked Bar Strawberry, Pumpkin & Beet | Not recorded | 0g | 5g | No added sugar· B | Open Food FactsCheck date not recorded |
| That's It | Apple + Banana Fruit Bar | 1 bar (35g) | 0g | 19g | No added sugar· B | Manually entered label data |
Magic Spoon
Magic Spoon
Marshmallow Treats
0g added sugar

Once Upon a Farm
Mixed berry soft baked bar
0g added sugar

Once Upon a Farm
Organic Oat Bar
0g added sugar

Once Upon a Farm
Organic Refrigerated Fruit Bar Strawberry
0g added sugar

Once Upon a Farm
Organic Refrigerated Oat Bar Apple Cinnamon
0g added sugar

Once Upon a Farm
Organic Refrigerated Oat Bar Banana Chocolate
0g added sugar

Once Upon a Farm
Organic Soft-Baked Bar Mixed Berry
0g added sugar

Once Upon a Farm
Soft Baked Bar : Apple and Oat
0g added sugar

Once Upon a Farm
TRACTOR WHEELS Organic Toddler Soft-Baked Bar Strawberry, Pumpkin & Beet
0g added sugar

That's It
Apple + Banana Fruit Bar
0g added sugar

That's It
Apple + Blueberry Fruit Bar
0g added sugar

That's It
Apple + Mango Fruit Bar
0g added sugar

That's It
Apple + Pear Fruit Bar
0g added sugar

That's It
Apples + Blueberries Mini Fruit Bar
0g added sugar

That's It
Apple + Strawberry Fruit Bar
0g added sugar

Earth's Best
Apple strawberry organic oaty fruit snack bars, apple strawberry
0g added sugar

Goodies
Banana Bread Mini Oat Bites
0g added sugar

Cascading farm
Blueberry Vanilla Chewy Bars - No Added Sugar
0g added sugar

BEAR
Carrot cake bars
0g added sugar

Organic Mamia
Carrot Cake Soft Oaty Bars
0g added sugar
The bar aisle is mostly dessert pretending to be a snack. Typical kids granola bars land at 7–12g of added sugar per bar — nearly half a child's 25g daily American Heart Association allowance in one wrapper. Chocolate-coated, "dipped," and "yogurt-covered" variants push higher still.
Of the 245 bars in our database, 11% have more than 5g of added sugar per serving, and the pool averages 2.6g of added sugar per bar. The highest-sugar bar we currently track is Chobani Flip Maple Granola Bites at 12g. For context, that's more added sugar than a full can of soda delivers per 12oz serving.
For this hub we filtered to Tier A, B, and C — bars with 3g or less of added sugar. That gives 7 sugar-free, 76 zero-added-sugar, and 55 low-sugar bars. The zero-added-sugar category is where date-sweetened and fruit-sweetened bars live: RXBAR Kids, Larabar Kid, That's It Mini bars, and similar. The 1–3g Tier C bracket picks up higher-protein bars where a gram or two of added sugar is used for binding rather than flavor.
Standouts by brand. RXBAR Kids and Larabar Kid are the two widest-distribution zero-added-sugar bars — date-and-nut bases with 0g added sugar. For nut-free schools, 88 Acres Seed Bars (about 3g added sugar) are made in a dedicated allergen-free facility and clear Tier C. Made Good Granola Bars hit 6g — not on this list, but a common Tier D fallback. Clif Kid ZBar runs 10g added sugar, which is Tier E and routinely assumed to be a "healthy kids bar" when it's closer to a cookie in sugar content.
Below is every bar in our catalog at 3g of added sugar or less, sorted by added sugar ascending. Use the list to build a lunchbox rotation that doesn't rely on sweet bars as the default.