Peanut Butter Chocolate Chip Bars

I love recipes for treats that come together quickly and don't take long to prepare. These might be better after cooling for a while, but hot out of the oven they were delicious. The recipe was adapted from here - an idea I found on Nicala's Pinterest board.

Peanut Butter Chocolate Chip Bars

1/2 cup butter or margarine, melted
1/3 cup peanut butter (can be heaping)
1 cup brown sugar
1 egg
1 teaspoon vanilla
1 cup flour (add 2-3 tablespoons in Florida)
1/2 teaspoon baking powder
1/4 teaspoon salt
3/4 cup chocolate chips

Add the peanut butter and sugar to the melted butter. (I used the same pan in which I melted the butter.) Then stir in the egg and vanilla. Add the flour, baking powder and salt, briefly mixing the dry ingredients together before incorporating into the rest of the mixture. Stir in the chocolate chips and pour into a greased 8" square pan. Bake at 350° for 20 minutes.

Note: The original recipe suggested sprinkling additional chocolate chips on top before baking. When I tried that, they fell off easily after baking. There's plenty of chocolate without them, but if you want to go that route, press them into the batter first.