Kathy'S Chewy Excellent Brownies
["2 eggs", "1 stick butter, melted", "1 tsp. vanilla", "1/3 c. cocoa", "1 c. flour", "3/4 to 1 c. sugar"]
["Beat together eggs, butter and vanilla.", "Mix together cocoa, flour and sugar.", "Add moist ingredients to dry and stir well.", "Add nuts, if desired.", "Bake in 350\u00b0 oven for 25 minutes in greased 8 x 8-inch or 9 x 9-inch pan."]
["eggs", "butter", "vanilla", "cocoa", "flour", "sugar"]