Baking advice

[firstimemamma]

Hi, I'm planning on baking banana bread with my son and have just checked the recipe- it says to use 225g self raising flour and 1tbsp baking powder.

I've only got plain flour, would I be ok using this and doubling up on the baking powder? Tia

It's 2 teaspoons of baking powder per 150g of plain flour (google tells me), so I'd use 3 for 225g of plain flour.

Was it definitely a tablespoon and not a teaspoon? That's a lot of raising agent.

I'd put an extra 1/3 teaspoon of baking powder into the 225g plain.

Thanks for the replies. Sorry for the typo - yes I meant tsp. OH returned from town with self-raising flour so all went well.