Best Chocolate Chip Coffee Bars


  • Basic Crust
  • 1-1/3 cup all-purpose flour
  • 1/2 tsp baking powder
  • 1/3 cup unsweetened cocoa powder
  • 1/4 tsp salt
  • 3/4 cup 1-1/2 sticks unsalted butter- softened
  • 1/2 cup granulated sugar
  • 1 large egg yolk
  • 1 tsp coffee extract


  • 1 - 11 oz bag chocolate chips
  • 1-1/2 cup milk
  • 1/3 cup granulated sugar
  • 4 large eggs
  • 2 tsp coffee extract
  • 2/3 cup toffee bits
  • 1/2 cup chocolate chips


  1. Heat oven to 350 degrees
  2. Line 9x13 baking pan with parchment- allowing a little to extend beyond the pan
  3. In medium bowl whisk flour, baking powder, salt, cocoa powder.
  4. Beat butter & remaining ingredients on medium in mixer with paddle attachment until creamy.
  5. On low- beat in dry mixture- scrape down sides
  6. Drop into prepared pan.
  7. Press down dough until it is in a thin layer covering the entire bottom of pan
  8. Bake 20 minutes- until surface is dry & set.
  9. When done- remove & reduce your oven temp to 325 degrees.

While your bottom is baking- place your 11 ounces of chocolate chips into a medium bowl.

  1. In small saucepan heat milk to a simmer- remove & carefully pour over chocolate chips.
  2. Whisk until all chocolate chips are melted.
  3. Whisk in sugar & coffee extract until blended.
  4. At this point your liquid should be cool enough to add your eggs without scrambling them.
  5. Whisk until the eggs are completely combined.
  6. Pour over your crust that should have come out from baking just moments before you finished the chocolate liquid mixture.
  7. Bake 30 minutes or until the edges have risen slightly higher than the center & center is just set. (mine had some spots that rose into large bubbles- they flattened once it cooled)
  8. After removing from the oven- sprinkle with toffee bits & remaining 1/2 cup of chocolate chips.
  9. Set IN PAN on wire rack to cool 15 minutes.
  10. Move to refrigerator for a minimum of 2 hours to fully set.
  11. Once set- pull up on parchment to remove from pan & cut into squares.
  12. Store in air tight container in the refrigerator.