Below are the nutrition facts and Weight Watchers points for Large Butterfinger Sonic Blast from Sonic Drive-In .
There are 1440 calories in a Large Butterfinger Sonic Blast from Sonic. Most of those calories come from fat (45%) and carbohydrates (48%).
*All percent daily value figures are based on a 2,000 calorie diet.
Weight Watchers Freestyle Points: 66
Weight Watchers SmartPoints: 66
Weight Watchers PointsPlus: 39
Weight Watchers points for the full Sonic menu
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Allergy Information: a Sonic Butterfinger Sonic Blast contains milk, peanuts and soy. a Sonic Butterfinger Sonic Blast does not contain egg, fish, gluten, MSG, shellfish, tree nuts or wheat.*
* Please keep in mind that most fast food restaurants cannot guarantee that any product is free of allergens as they use shared equipment for prepping foods.