Grease and line a 20cm square baking tin and preheat your oven to 160°C/Gas Mark 3.
In a saucepan over low heat, melt the butter, sugar, peanut butter, honey, and citrus zest, stirring occasionally.
Once melted, stir in the oats, dried fruit, and three-quarters of the seeds. Mix until well combined.
Spread the mixture evenly in the prepared tin, smoothing the top.
Scatter the remaining seeds over the mixture and drizzle with a little extra honey.
Bake for 30 minutes, until golden brown and firm in the centre.
Let cool completely in the tin before cutting into squares. Store in an airtight tin for 5-7 days.
For Banana Booster Bars, swap peanut butter for a mashed ripe banana, added after combining the other ingredients.
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