1. Sift flour before measuring. Stir together flour, baking powder and salt in a small bowl.
2. Layer the ingredients in a clean 1-quart glass canister or jar in the following order (from bottom to top): sugar, cocoa, flour mixture, peanut butter chips and small chocolate chips. Tap jar gently on the counter to settle each layer before adding the next one.
3. Cover jar and attach a gift tag, or handwrite a tag with the recipe below. Makes 1 gift jar.
Heat oven to 350 F. Grease and flour an 8x8x2-inch baking pan.
Combine 1/2 cup (1 stick) melted and cooled butter and 2 slightly beaten eggs in a large bowl. Gently stir in jar contents.
Spread in prepared pan. Bake for 35 minutes.
Cool in pan. Cut into bars. Makes 16 bars.
More information: Tips to Make Gifts in a Jar