Mom’s peanut butter swirl bars

This is one of those treats I remember from childhood. It was the sort of thing my mom would make when a baked treat was needed for school or work. If  you like peanut butter and chocolate, you can’t help but like these cakey, chewy treats. (And for a pregnant lady with cravings for both chocolate and peanut butter, they’re just about the best thing ever)


1/3 cup / 75g butter

1/2 cup / 110g peanut butter (smooth or crunchy, doesn’t matter)

3/4 / 169g cup sugar

3/4 cup / 135g brown sugar

1/4 tsp salt

1 cup / 115g flour

12-24 oz / 300-600g chocolate chips (depending n how chocolatey you want them)

2 eggs

2 tsp / 10ml vanilla

1 tsp / 5g baking powder


1. Mix the butter, peanut button, sugar and brown sugar in a bowl.

2. Add the eggs and vanilla and beat until well blended

3. Add the baking powder and flour gradually until well mixed

4. Pour or spread into a lightly greased 9 x 12 inch pan (you can use a different sized pan, but may need to adjust cooking times accordingly)

5. Sprinkle chocolate chips on the top

6. Bake in a 350 F / 180 C degree oven for 5 mins

7. Take the pan out of the oven and run a knife back and forth through the mixture to create the swirl of chocolate and peanut butter

8. Bake for another 25-35 minutes. The bars are done when a skewer inserted into the cakey bit comes out clean (the chocolate may still be runny)

Note: I’ve always made this using American measures/measuring implements, so the metric equivilents above are untested. If anyone tries it out and it doesn’t work, let me know!

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