Mix flour, rolled oats, 1 cup brown sugar, baking soda, and 1/4 teaspoon salt. Add 1/2 cup butter and mix until crumbly, first with a fork, then with fingers. Press mixture into a greased 9x13-inch pan. Bake for 10 minutes.
Beat eggs, stir in remaining brown sugar and almond extract. Mix flour, baking powder, and 1/2 teaspoon salt together, then stir into egg mixture. Add coconut and cherries and stir to blend. Pour over first mixture and spread evenly. Sprinkle with pecans. Return to oven and bake 25 minutes, or until lightly browned.
Cool and ice with Cherry-Almond Icing. Cut in 1 1/2 x 3" squares, or bars.
Cherry Almond Icing:
Blend remaining 3 tablespoons butter and icing sugar. Add reserved cherry juice and 1/4 teaspoon almond extract, using enough juice to make the icing easy to spread. Stir until smooth.