Rainbow Blondies
1 cup butter or margarine
1 1/2 cups firmly packed light brown sugar
1 large egg
1 teaspoon vanilla extract
2 cups all-purpose flour
1/2 teaspoon baking soda
1 (12 ounce) package M&M
1 cup butter or margarine
1 1/2 cups firmly packed light brown sugar
1 large egg
1 teaspoon vanilla extract
2 cups all-purpose flour
1/2 teaspoon baking soda
1 (12 ounce) package M&M