Beat in a medium bowl room temperature eggs and sugar until frothy
Melt chocolate chips and butter on stove (be careful not to burn them) and mix in vanilla
Pour melted chocolate into the egg mixture and beat until combined
Mix dry ingredients together in a separate bowl
Add dry ingredients to the chocolate mixture
Pour into a lined glass baking pan and gently bang on the counter a couple times to remove air bubbles
Bake for 12 minutes and remove again to gently bang a couple times pan and release any more air bubbles
Bake an addition 12-15 minutes or until a fork comes out clean
Allow to cool completely before cutting
Store in airtight container in fridge for up to 4 days and on counter up to 3 days. Reheat as desired!