Choose one of the following options to soften the oats. OVERNIGHT OPTION: In a small container, combine the oats, gogi berries, milk and vanilla. Cover and let soak overnight in the refrigerator. QUICK OPTION: In a 1.5 cup or larger microwave safe container, combine oats, milk and vanilla and microwave on high for 1 minute to soften the oats.
Combine dry ingredients in a small bowl and blend together with a wire whisk.
Mash the bananas in a medium bowl with a fork. Add egg whites and the softened oats mixture and stir together. (If the oats are hot from the microwave, stir quickly so they don't cook the eggs).
Pour the dry mix on top of the banana mixture and stir until powder is mixed in completely.
Divide the batter evenly into 6 small tea cups or for larger muffins use three 8oz ramekins (NOTE: Batter should never fill its container more than half full or it will bubble over while cooking).
Top each one with a sprinkling of coconut and/or dried gogi berries if desired.
Put all containers in the microwave together with at 1-2" space in between and microwave on high for 3 to 5 minutes or just until center is dry to the touch (see microwave tips below to determine cook time).
Carefully remove containers from microwave using oven mitts. Flip over with the serving plate or your hand underneath (ready to catch) and shake muffins lightly side to side and up and down and the muffin should drop right out! Flip so it is right side up and let cool.
Serve warm, or store in covered containers in the fridge for up to a week (cool muffin completely before storing to prevent soggy bottoms).
MICROWAVING TIPS: After 3 minutes of baking in the microwave, the muffins should have doubled in height and should be bubbling at the center and possibly the edges. When bubbling stops and centers look dry, stop the microwave and quickly tap the center with your finger. If the batter sticks to your finger, put them back in microwave for another 15-30 seconds and then check again. Repeat until the batter is dry and doesn't stick. NOTE: Cook time will be reduced if the oats and milk were already hot from the microwave when you mixed the batter.