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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


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

  • In small saucepan heat milk to a simmer- remove & carefully pour over chocolate chips.
  • Whisk until all chocolate chips are melted.
  • Whisk in sugar & coffee extract until blended.
  • At this point your liquid should be cool enough to add your eggs without scrambling them.
  • Whisk until the eggs are completely combined.
  • Pour over your crust that should have come out from baking just moments before you finished the chocolate liquid mixture.
  • 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)
  • After removing from the oven- sprinkle with toffee bits & remaining 1/2 cup of chocolate chips.
  • Set IN PAN on wire rack to cool 15 minutes.
  • Move to refrigerator for a minimum of 2 hours to fully set.
  • Once set- pull up on parchment to remove from pan & cut into squares.
  • Store in air tight container in the refrigerator.