Candies, MARS SNACKFOOD US, TWIX Peanut Butter Cookie Bars
Whole food · Sweets
Photo: Wikipedia
A candy bar featuring a crisp cookie base, topped with peanut butter and coated in milk chocolate. It delivers a satisfying crunch followed by a rich, salty-sweet peanut butter flavor. Nutritionally, it is very energy-dense, with over half its calories coming from fat.
Calorie split: 7% protein · 40% carbs · 54% fat
↓ Full nutrition💚 Why it's loved
People love the addictive contrast of textures—the crisp cookie, creamy peanut butter, and smooth chocolate—and the perfect balance of sweet and salty. It's a nostalgic treat often associated with movie theaters and quick indulgences.
⚠️ Watch-outs & how to enjoy it better
This is a high-calorie, high-sugar, and high-fat food that can contribute to blood-sugar spikes and is not suitable for those with peanut allergies. To enjoy mindfully, practice strict portion control (e.g., one mini bar) and pair it with a source of fiber or protein, like an apple or a handful of nuts, to slow sugar absorption.
Key benefits
- Quick source of energy from carbohydrates and fats
- Contains some protein from peanuts and cookie
- Provides a small amount of dietary fiber
- Offers a convenient, portable snack format
- Delivers a classic, comforting flavor combination
🍽️ Popular dishes
🌍 Where it's eaten
💡 Did you know?
The original TWIX was first produced in the UK in 1967, a full five years before it was introduced in the United States in 1972.
Full nutrition (USDA data · scales with serving)
| Water | 1.8 g |
| Energy | 547 kcal |
| Energy | 2290 kj |
| Protein | 9.2 g |
| Total lipid (fat) | 32.7 g |
| Ash | 2.2 g |
| Carbohydrate, by difference | 54.1 g |
| Fiber, total dietary | 3.1 g |
| Total Sugars | 36.1 g |
| Calcium, Ca | 75.0 mg |
| Iron, Fe | 1.3 mg |
| Magnesium, Mg | 61.0 mg |
| Phosphorus, P | 173 mg |
| Potassium, K | 264 mg |
| Sodium, Na | 226 mg |
| Zinc, Zn | 1.6 mg |
| Copper, Cu | 0.29 mg |
| Manganese, Mn | 0.94 mg |
| Selenium, Se | 12.9 ug |
| Vitamin C, total ascorbic acid | 0.30 mg |
| Thiamin | 0.10 mg |
| Riboflavin | 0.14 mg |
| Niacin | 2.4 mg |
| Pantothenic acid | 0.47 mg |
| Vitamin B-6 | 0.11 mg |
| Folate, total | 15.0 ug |
| Folic acid | 0.00 ug |
| Folate, food | 15.0 ug |
| Folate, DFE | 15.0 ug |
| Choline, total | 29.4 mg |
| Vitamin B-12 | 0.26 ug |
| Vitamin B-12, added | 0.00 ug |
| Vitamin A, RAE | 20.0 ug |
| Retinol | 20.0 ug |
| Carotene, beta | 1.0 ug |
| Carotene, alpha | 0.00 ug |
| Cryptoxanthin, beta | 0.00 ug |
| Vitamin A, IU | 68.0 iu |
| Lycopene | 0.00 ug |
| Lutein + zeaxanthin | 31.0 ug |
| Vitamin E (alpha-tocopherol) | 3.4 mg |
| Vitamin E, added | 0.00 mg |
| Vitamin D (D2 + D3), International Units | 0.00 iu |
| Vitamin D (D2 + D3) | 0.00 ug |
| Vitamin K (phylloquinone) | 6.0 ug |
| Alcohol, ethyl | 0.00 g |
| Caffeine | 7.0 mg |
| Theobromine | 70.0 mg |
Fat & fatty acid profile (per 100g)
| Fatty acids, total saturated | 15.8 g |
| SFA 4:0 | 0.32 g |
| SFA 6:0 | 0.11 g |
| SFA 8:0 | 0.07 g |
| SFA 10:0 | 0.12 g |
| SFA 12:0 | 0.17 g |
| SFA 13:0 | 0.00 g |
| SFA 14:0 | 0.49 g |
| SFA 15:0 | 0.05 g |
| SFA 16:0 | 7.3 g |
| SFA 17:0 | 0.07 g |
| SFA 18:0 | 6.4 g |
| SFA 20:0 | 0.29 g |
| SFA 22:0 | 0.34 g |
| SFA 24:0 | 0.08 g |
| Fatty acids, total monounsaturated | 12.3 g |
| MUFA 14:1 | 0.03 g |
| MUFA 15:1 | 0.00 g |
| MUFA 16:1 | 0.06 g |
| MUFA 17:1 | 0.01 g |
| MUFA 18:1 | 12.1 g |
| MUFA 20:1 | 0.08 g |
| MUFA 22:1 | 0.00 g |
| MUFA 24:1 c | 0.00 g |
| Fatty acids, total polyunsaturated | 3.4 g |
| PUFA 18:2 | 3.4 g |
| PUFA 18:3 | 0.06 g |
| PUFA 18:4 | 0.00 g |
| PUFA 20:2 n-6 c,c | 0.00 g |
| PUFA 20:3 | 0.00 g |
| PUFA 20:4 | 0.00 g |
| PUFA 20:5 n-3 (EPA) | 0.00 g |
| PUFA 22:5 n-3 (DPA) | 0.00 g |
| PUFA 22:6 n-3 (DHA) | 0.00 g |
| Fatty acids, total trans | 0.51 g |
| Cholesterol | 6.0 mg |
Amino acid profile (per 100g)
Estimated from Candies, honey-combed, with peanut butter — USDA does not publish this profile for Candies.
| Tryptophan | 0.09 g |
| Threonine | 0.21 g |
| Isoleucine | 0.24 g |
| Leucine | 0.61 g |
| Lysine | 0.27 g |
| Methionine | 0.10 g |
| Cystine | 0.09 g |
| Phenylalanine | 0.47 g |
| Tyrosine | 0.33 g |
| Valine | 0.31 g |
| Arginine | 1.1 g |
| Histidine | 0.22 g |
| Alanine | 0.36 g |
| Aspartic acid | 1.2 g |
| Glutamic acid | 2.0 g |
| Glycine | 0.56 g |
| Proline | 0.55 g |
| Serine | 0.58 g |
FAQ
How does the peanut butter version differ from regular TWIX?
The regular TWIX has a caramel layer instead of peanut butter, resulting in a chewier, sweeter profile. The peanut butter version offers a saltier, nuttier flavor with a slightly different texture from the peanut butter filling.
Is this a good pre-workout snack?
While it provides quick energy, its high fat content may slow digestion and cause discomfort during intense exercise. It's not an ideal choice; a banana or a small energy bar with a better carb-to-fat ratio is preferable.
Can I find a version with less sugar?
Standard TWIX Peanut Butter Cookie Bars are not low in sugar. For a lower-sugar alternative, you might look for protein bars or homemade versions using natural sweeteners and dark chocolate.
Nutrient density (calculated · NRF9.3)
Nutrient Rich Foods index: beneficial nutrients (protein, fiber, vitamins, minerals) minus saturated fat, added sugar & sodium, per 100 kcal.
NRF9.3 index — Fulgoni, Keast & Drewnowski, 2009. Computed from USDA nutrients.
Weight-loss friendliness (composite index)
Energy density 5.47 kcal/g · 7% calories from protein · 3.1 g fiber · 36.1 g sugar per 100 g.
Composite of energy density (Rolls et al., 1999), protein & fiber satiety, minus sugar. A calculated heuristic — ranks satiety-per-calorie, not a clinical measure.
Dietary load (calculated from USDA values)
Potential renal acid load. Positive = acid-forming, negative = alkaline-forming.
Sodium-to-potassium ratio: 0.86 (lower is better — aim for ≤ 1)
Sodium:potassium per WHO potassium guidance. Computed from USDA nutrients.