Chocolate RumChata Glazed Banana Doughnuts

Name: Chocolate RumChata Glazed Banana Doughnuts
Ingredients: 4 Tablespoons Butter, room temperature; 1/4 Cup Vegetable Oil; 1 Banana, ripened and mashed; 1/2 Cup Granulated Sugar; 1/3 Cup Brown Sugar; 2 large Eggs, room temperature; 1 1/2 Teaspoon Baking Powder; 1/4 Teaspoon Baking Soda; 1/2 Teaspoon Ground Nutmeg; 1/2 Teaspoon Cinnamon; 3/4 Teaspoons Salt; 2 Teaspoons Vanilla Bean Paste; 2 2/3 Cups Unbleached Alll-Purpose Flour; 1 Cup Whole Milk; 1 Cup Powdered Sugar; 3 Tablespoons Unsweetened Cocoa Powder; 7-8 Tablespoons RumChata; 1/2 Cup Unsweetened Coconut Flakes