Step 1

Line an 8-inch square pan with parchment paper, allowing it to overhang two sides of the pan for easy removal.

Step 2

Place a heavy-bottomed pot or sauté pan over medium heat. Toast the pumpkin seeds and oats until fragrant, about 7 minutes. Pour the seeds and oats into the bowl of a food processor, and pulse several times to chop.

Step 3

Add the salt, maple syrup, and vanilla to the food processor. Pulse again to distribute the syrup and further break down the seeds and oats. Check the texture, and squeeze a small amount between your fingers to see if it holds together. It should look like coarse crumbs at this point. Add another teaspoon of maple syrup for stickiness, if needed.

Step 4

Pour the crust mixture into the parchment-lined pan. Lightly spread the crumbs around the pan so that it's even, then firmly press into the pan so that it's compact. Place the crust in the refrigerator.

Step 5

Rinse the food processor and sauté pan to remove any seed or oat fragments. Wipe clean with a towel if necessary. Set the pan aside. To the food processor, add the tofu, zest, juice, milk, and sugar (or maple syrup), and blend until smooth. Taste the filling, and add a bit more lemon zest or sugar, if desired. Add the tapioca, agar, and turmeric/nutritional yeast, if using. Process for 15 to 20 seconds to ensure all ingredients are blended.

Step 6

Place the pot/saute pan over medium heat, and pour the lemon filling into the pan. Stir frequently with a whisk or silicone spatula. When the mixture begins to bubble, stir constantly, and cook until thickened, about 2 to 3 minutes. Remove from heat, and let the mixture cool for about 5 minutes, whisking occasionally so that it doesn't set.

Step 7

Remove the crust from the refrigerator, and pour the filling onto the crust. Smooth the top with a silicone spatula. Refrigerate the lemon bars for at least 2 to 3 hours before slicing into 16 squares.