• Preheat the oven to 300°F (150°C). Line a large baking sheet with parchment paper. Set it aside.
• In a large mixing bowl, stir the dry ingredients: steel-cut oats, rolled oats, cinnamon, nuts, and seeds.
• Stir in the liquid ingredients: maple syrup, oil, almond butter, and vanilla extract.
• Stir until all the ingredients are well coated, then spread them in a single layer onto the prepared baking sheet.
• Bake for 15 minutes at 300°F (150°C) on the center rack of the oven until fragrant.
• Cool down at room temperature on the baking sheet without touching it. The granola clusters will form after 20 minutes of cooling down.
• Serve 1/4 cup with plant-based milk or vegan yogurt.

Storage

• Store for up to 2 weeks in an airtight container, in the pantry, or in a dark, cold place.