In a large bowl whisk together the lime juice, honey, salt and red pepper flakes.
To the bowl add diced pineapple, mango, red bell pepper, onion and cilantro. Gently stir until combined and the ingredients are evenly coated.
Place into an airtight container and chill in the refrigerator for 2-4 hours prior to serving.
Notes
Use Fresh Mangoes and Pineapple - Please note, this recipe uses fresh pineapple and mangoes, not canned. Canned fruit have a different texture that isn't the best for a fresh salsa like this recipe.
Peppers - If you'd like to add more spice to the mix, you could add chopped habanero pepper, serranos or a couple of tablespoons of diced jalapeño pepper, adjusting the amount to your taste.
How to Choose Fresh Pineapple - When choosing a fresh pineapple it's all about the amount of "give" it has when it's squeezed. A ripe pineapple will have a firm exterior but should still be slightly soft and have some give when squeezed. The color should be slightly golden with few green patches. If you give a fresh pineapple a squeeze and it's super hard it's likely not fully ripe and ready to eat.
How to Choose Fresh Mangoes - The same rule applies to choosing fresh mangoes. When gently squeezed a ripe mango will have some "give." Make sure it's not too soft, or that could signal that it's overripe. No one likes mushy salsa.
Serving Options - You can serve this easy fruit salsa simply with tortilla chips as a dip. It's also a mouthwatering topping to serve with grilled chicken, salmon or pork. Serve it on salads or with grilled kabobs as well as fish and shrimp tacos. It provides the sweet to balance the heat in a spicy entrée.