1. Heat oven to 425. 2. Line a rimmed metal baking sheet with parchment paper, then spread your grapes out on the parchment. 3. Season the grapes lightly with salt. 4. Roast the grapes for 15 minutes. Set aside. 5. Meanwhile, bring a small pot of the almond milk to a simmer, then slowly stir in the buckwheat. 6. Simmer the buckwheat for 10 minutes, stirring occasionally. 7. Season the buckwheat with salt and stir in the cinnamon. 8. Spoon the buckwheat into a bowl, then top with the roasted grapes (and any juice), maple syrup, pepitas, and hemp hearts, if using.