Easy Brownies from Scratch

4 (1 ounce) squares unsweetened chocolate or 12 T cocoa powder plus 3 T oil
3/4 cup butter
2 cups white sugar
3 eggs
1 teaspoon vanilla extract
1 cup all-purpose flour


Preheat oven to 350 degrees F (180 degrees C).
Microwave chocolate and butter or margarine in large bowl at HIGH for 2 minutes or until butter or margarine is melted.
Stir until chocolate is melted. Stir in sugar. Mix in eggs and vanilla. Stir in flour. Spread in greased 13 x 9 inch pan. Bake for 35 minutes.