Nuts like almonds, walnuts, and cashews, as well as nut butters, are calorie-dense and rich in healthy fats.
They're a perfect snack to increase your calorie intake without filling up your stomach.
Avocado is a superfood when it comes to healthy fats and calories.
Add slices to your sandwiches, salads, or smoothies for a creamy, high-calorie boost.
Cook with olive oil or drizzle it over your meals.
A small amount can add extra calories to your dishes without adding much bulk.
Opt for full-fat versions of milk, yogurt, and cheese.
These are calorie-rich and provide essential nutrients while being easy on the stomach.
Dried fruits like raisins, dates, and apricots are concentrated sources of calories.
They make for a sweet and satisfying snack.