A buttery brown sugar crust topped with REESE’S Peanut Butter Chips, walnuts, and a sweet condensed milk layer. Cut the cooled bars into 24 or 40 triangles.
Use the recipe card below for the full ingredient list, step-by-step directions, and practical baking tips.
Helpful Tips
- Use sweetened condensed milk, not evaporated milk, for the filling to set properly.
- Press the crumb crust evenly into the pan so it bakes into a sturdy base.
- For clean triangles, let the bars cool completely before cutting.
Peanut Butter Chip Triangles
Ingredients
Instructions
- Heat the oven to 350°F (175°C). Stir together the flour and brown sugar in a medium bowl. Cut in the cold butter with a pastry blender or fork until the mixture resembles coarse crumbs. Stir in 1/2 cup peanut butter chips. Press the mixture onto the bottom of an ungreased 13 × 9 × 2-inch baking pan. Bake for 15 minutes.
- Meanwhile, combine the sweetened condensed milk, egg, and vanilla in a large bowl. Stir in the remaining peanut butter chips and walnuts. Spread evenly over the hot baked crust.
- Bake for 25 minutes, or until golden brown. Cool completely in the pan on a wire rack, about 2 hours. Cut into 2- or 2 1/2-inch squares, then cut each square diagonally into triangles. Sift powdered sugar over the top if desired.
Storage
Store completely cooled cookies or bars in an airtight container at room temperature for up to 5 days. Freeze for up to 2 months.
Estimated Nutrition
About 190 calories 10 g 24 g 4 g per serving; values are estimates and vary by portion size.
Frequently Asked Questions
How many triangles does the recipe make?
Depending on the size of the squares, it makes 24 or 40 triangles.
Can I use evaporated milk instead of condensed milk?
No. The recipe specifically calls for sweetened condensed milk, not evaporated milk.
How do I cut the bars into triangles?
Cut the cooled slab into 2- or 2 1/2-inch squares, then cut each square diagonally.
Recipe adapted from the vintage cookbook pages supplied by the site owner; wording clarified for readability with AI assistance. Featured image: AI-generated food photography. Nutrition is estimated.