Training Day Banana Bread: High-Carb Oat Loaf for Endurance Athletes

Why This Recipe Works for Athletes

Bananas are a triathlete’s best friend: fast-release carbohydrates, natural sugars, potassium, and B vitamins all in one convenient package. Combined with oats for sustained energy and eggs for protein, this banana bread gives you pre-training fuel that won’t spike and crash your blood sugar mid-session. Bake a loaf on Sunday evening and you have eight servings sorted for the week ahead.

Ingredients

  • 3 large ripe bananas (approximately 300g, peeled and mashed)
  • 200g rolled oats
  • 2 large eggs
  • 3 tbsp honey or maple syrup
  • 1 tsp vanilla extract
  • 1 tsp baking powder
  • ½ tsp ground cinnamon
  • Pinch of salt
  • Optional: 50g dark chocolate chips or 40g chopped walnuts

Instructions

  1. Preheat your oven to 175°C (fan 160°C / gas mark 4). Line a standard 900g loaf tin with baking paper.
  2. Mash the bananas thoroughly in a large bowl until smooth. Whisk in the eggs, honey (or maple syrup), and vanilla extract.
  3. Add the rolled oats, baking powder, cinnamon, and salt. Stir until everything is well combined — the batter will be thick and slightly sticky.
  4. Fold in chocolate chips or walnuts if using.
  5. Pour the batter into the lined loaf tin and smooth the top with a spatula. Optional: press a few oat flakes on top for presentation.
  6. Bake for 40–45 minutes until the top is golden brown and a skewer inserted into the centre comes out clean. If the top browns too quickly, cover loosely with foil for the final 10 minutes.
  7. Leave to cool in the tin for 10 minutes before transferring to a wire rack. Slice once fully cooled.

Nutrition Notes

Per slice (8 slices per loaf): approximately 185 kcal, 5g protein, 34g carbohydrates, 4g fat. The natural sugars from banana provide quick energy while the oats deliver a slower carbohydrate release — making one slice ideal 60–90 minutes before a session. For higher protein, replace 30g of oats with a scoop of vanilla whey or plant protein powder. For a lower-sugar version, use just one tbsp of honey and add an extra half banana.

Prep time: 10 minutes | Cook time: 40–45 minutes | Servings: 8 slices