Custard-Filled Long John
The Custard-Filled Long John is a popular North American doughnut, typically a rectangular, yeast-raised bar that is deep-fried until golden, then sliced open and filled with smooth vanilla custard. It is often finished with a simple sugar glaze or a chocolate topping. It's a staple in many local doughnut shops and bakeries across the United States and Canada.
🍽️ Nutrition at a glance
This pastry is high in carbohydrates and fat, with a moderate amount of protein coming from the egg and milk in the custard and dough. A standard serving can range from 300 to 450 calories, providing a quick energy boost but little in the way of essential vitamins or minerals.
Nutrition breakdown
| Calories | 380 kcal |
| Protein | 6 g |
| Carbs | 45 g |
| Fat | 20 g |
| Fiber | 1 g |
| Sugar | 22 g |
| Sodium | 320 mg |
| Iron | 2.5 mg |
| Calcium | 45 mg |
| Potassium | 120 mg |
| Vitamin A | 150 mcg RAE |
| Vitamin D | 1.5 mcg |
| Thiamin (B1) | 0.2 mg |
| Folate | 50 mcg DFE |
| Phosphorus | 80 mg |
Per 1 pastry (approx. 120 g) · estimated, varies by recipe
💡 What's interesting
The Long John is part of a family of filled bar doughnuts whose names often vary regionally, with similar pastries called 'Maple Bar' or 'Chocolate Long John.' Its design is purely functional, with the elongated shape making it ideal for holding a generous amount of filling.
