|Granulated sugar||1⁄2 Cup (8 tbs)|
|Packed light brown sugar||1⁄2 Cup (8 tbs)|
|Butter||1⁄4 Cup (4 tbs), softened|
|Egg white||1 Large|
|Vanilla extract||1 Teaspoon|
|All purpose flour||1 1⁄4 Cup (20 tbs)|
|Baking powder||1⁄2 Teaspoon|
|Butterscotch morsels||1⁄3 Cup (5.33 tbs), divided|
|Cooking spray||1 Tablespoon|
|Miniature marshmallows||1⁄2 Cup (8 tbs)|
|Chopped pecans||2 Tablespoon|
1. Preheat oven to 350°.
2. Beat sugars and butter with a mixer at medium speed until well blended (mixture will resemble damp sand). Add egg and egg white, 1 at a time, beating until well blended. Stir in vanilla.
3. Lightly spoon flour into dry measuring cups; level with a knife. Combine flour, baking powder, and salt; stir well with a whisk. Add flour mixture to sugar mixture; beat at low speed just until blended. Fold in 3 tablespoons butterscotch morsels.
4. Spread batter evenly into an 8-inch square baking pan coated with cooking spray. Sprinkle marshmallows, pecans, and remaining butterscotch morsels evenly over top; lightly press into batter. Bake at 350° for 30 to 31 minutes or until a wooden pick inserted in center comes out clean. Cool in pan on a wire rack. Cut into 16 bars.