Here are some tricks to achieve a smooth paste if your food processor is making a gritty or lumpy praline paste. Add the nuts while they are still warm. The warmth of the nuts will help release the oils sooner and help with making a smoother paste. Chop the nuts and break the caramel into smaller pieces before adding them to the food processor. This can help especially if you break the caramel into smaller pieces. Give your food processor a break. While powerful food processors should not take longer than 5 minutes to produce a smooth praline paste, all food processors will not be as fast. If your food processor is warming up and the paste isn't as smooth as you like, GIVE IT A BREAK. Let it cool down, and you can process the paste again a few hours later. Add a little bit of oil. This is how I used to make praline paste in my previous (reliable but not as powerful) food processor. The nuts should have natural oils to help, but sometimes adding just a few tsps of neutral oil can help your food processor along. If you have access to hazelnut oil, you can add this to the praline to enhance the flavor. Embrace the pieces! It's absolutely OK for your praline to not be smooth too! Think of it as a "crunchy" praline paste. It'll still taste AMAZING!