Microwave Coconut Pie - cooking recipe

Ingredients

3/4 c. sugar
5 Tbsp. flour
3 egg yolks (reserve whites)
2 c. milk
1/2 stick margarine
1 tsp. vanilla
1 (3 1/2 oz.) can coconut
1 frozen or homemade pie shell, prebaked in conventional oven

Preparation

I didn't have potatoes