Ingredients
3/4 cup baking cocoa1/2 teaspoon baking soda2/3 cup butter, melted, divided1/2 cup boiling water2 cups sugar2 large eggs, room temperature, beaten1 teaspoon vanilla extract1-1/3 cups all-purpose flour1-1/2 to 2 teaspoons ground cinnamon1/4 teaspoon salt1 cup semisweet chocolate chipsFROSTING:6 tablespoons butter, softened1/2 cup baking cocoa2-2/3 cups confectioners’ sugar1 to 1-1/2 teaspoons ground cinnamon1/3 cup evaporated milk1 teaspoon vanilla extract
Preparation
Preheat oven to 350°. In a bowl, whisk cocoa and baking soda; blend in 1/3 cup melted butter. Add boiling water, stirring until thickened. Stir in sugar, eggs, vanilla and remaining butter. Add flour, cinnamon and salt. Fold in chocolate chips. Pour into a greased 13x9-in. baking pan. Bake until toothpick inserted in center comes out with moist crumbs, about 40 minutes. Cool.
For frosting, cream butter in a bowl. Combine cocoa, confectioners’ sugar and cinnamon; add alternately with the milk. Beat to a spreading consistency; add vanilla. Add more milk if necessary. Spread over the brownies.
