Place top oven rack in the center position and pre-heat oven to 350°F. Grease an 8” x 8” baking dish and set it aside.
In a large non-reactive bowl, toss apples with fresh lemon juice.
Add maple syrup, apple juice, cinnamon, allspice, thyme leaves, and salt. Toss to combine and set aside.
In a separate bowl, combine topping ingredients and stir until oats are thoroughly coated and all ingredients are well combined. Set aside.
Pour apple mixture into the prepared baking dish and spread into an even layer.
Spread the topping evenly across the top in a uniform layer, as well.
Place into the preheated oven and bake for 30 minutes. If the top layer is nicely browned, cover the dish loosely with aluminum foil to prevent over-browning.
Continue baking for another 15-20 minutes or until the apple crisp is nice and bubbling. Remove from the oven and set aside to cool for 5-10 minutes.
Serve warm with some vanilla bean iced cream or freshly whipped cream, if desired.