The banana-oat shake, blueberry shake, carrot shake and lemon lift recipes by the Medical Center of the University of California San Francisco are good high-calorie shake recipes. For any of the recipes, thoroughly wash all fruits and vegetables first, and use a clean cutting board. Substitute fresh fruits with frozen fruits for a thicker shake.
To make the banana-oat shake, add 1/2 cup of cooked oatmeal, 1 frozen banana, 1 cup of whole milk and 1 tablespoon of wheat germ into a blender. Add 1 tablespoon of pasteurized honey and 1 teaspoon of vanilla extract. Blend all ingredients together.
To make any of the other shakes, simply mix a few ingredients together in a blender. For the blueberry shake, blend 3 or 4 ounces of tofu, 1 banana, 1/2 cup of frozen blueberries and 1 cup of milk. To make the carrot shake, blend 1 cup of carrot juice, 3/4 cup of plain yogurt, 1 banana, 1 teaspoon of vanilla extract and 3 ice cubes. For the lemon lift, blend 1 cup of lemon yogurt, 1 cup of milk, 1 banana and 1 teaspoon of vanilla extract.
If you're lactose-intolerant, use lactose-free, soy or almond milk instead of dairy milk. Add protein powder or yogurt to any of the recipes to increase protein or peanut butter to increase calories.