Step 1: Grease each cup of a standard muffin tin well using cooking spray, butter, or coconut oil. (Note: A mini muffin tin can be used, baking time may vary slightly).
Step 2: In a medium bowl, whisk together the applesauce (or mashed banana), honey (or agave), and vanilla extract until combined.
Step 3: Add the rolled oats, cinnamon, and salt to the wet ingredients. Stir everything together thoroughly until all oats are coated and the mixture is cohesive.
Step 4: Portion the mixture evenly into the six greased muffin cups. Use the back of a spoon or your fingers to firmly press the mixture down into the bottom and up the sides of each cup to form a bowl shape. The firmer you press, the better they will hold together.
Step 5: Preheat your oven to 330°F (165°C).
Step 6: Place the muffin tin on a baking sheet for easier handling.
Step 7: Bake in the preheated oven for about 12 minutes, or until the edges are slightly golden and fragrant.
Step 8: Carefully remove the muffin tin from the oven. While the cups are still warm, gently use the back of a spoon to repress the sides back into shape if they have puffed up.
Step 9: Let the granola cups cool completely in the muffin tin for at least 10 minutes. This is crucial for them to set and prevent crumbling.
Step 10: Once cooled slightly in the tin, carefully loosen the edges with a knife if needed and lift them out. Serve warm or at room temperature, filled with yogurt and fresh fruit if desired.