you probably have all of these things in your pantry already. serves an 8” square pan but I recommend doubling and using a 9x13” pan.
1 stick butter
1 cup lightly packed brown sugar
1 egg
1 tsp vanilla extract
1/4 tsp salt if the butter is unsalted
1 cup all-purpose flour
optional: 1/2 cup chocolate chips, nuts (I like pecans), shredded coconut
Preheat the oven to 350º. Line an 8” square pan with parchment paper or tinfoil; parchment paper works better but let’s be honest, you don’t have that.
Melt the butter in the microwave in 20 second intervals. Once melted, add the brown sugar and mix well until it no longer separates. If you are using a mixer, now is the time. Add egg, vanilla, and salt, and mix well.
Add the flour, and mix the crap out of it. If you are mixing by hand, aim for 50 strokes. If using a mixer, mix on low for 3-5 minutes until the batter all comes together.
Fold in your add ins, if using. Pour into the lined pan and bake 20-25 minutes, until the centers look slightly raw with golden brown edges. Allow to cool in the pan.