Make the dough
In a microwave-proof bowl, combine non-dairy milk and water, and heat for 30-45 seconds or until the temperature reads 105°F – 115°F (the temperature range to activate the yeast).
Add sugar and active dry yeast, stir and let sit for 5-10 minutes until the yeast is activated and becomes frothy on the top.
While the yeast is activating, in a bowl, combine flour and salt. Make a well in the center.
Pour the activated yeast solution in the center and knead the dough. It will be sticky at the start, but as the gluten begins to develop, it’ll get less sticky and springier.
Once the dough is soft, smooth and springs back when pressed, add 1 teaspoon olive oil and coat bowl and dough generously.
Cover with a damp cloth and let proof in a warm spot for 1-1½ hours until doubled in size.
Make the “cheese sauce”
When the dough has been proofing for about an hour, bring a small pot of water to a rolling boil.
Add the chopped Idaho® russet potato and carrot and cook until tender. Drain and add to a blender along with the nutritional yeast, vinegar and salt. Blend until smooth and creamy adding 2-3 tablespoons of water till you get a nice pourable consistency. Set aside.
In a small skillet, heat oil on medium heat and sauté the chopped onion, poblano and garlic with a pinch of salt until it begins to soften and brown.
Add the chipotle in adobo sauce, ground cumin. Adjust salt to taste. Remove from heat and stir into the blended potato sauce. Set aside.
Shape the dough
Preheat oven to 450°F. Line a medium baking tray with parchment paper.
Divide the proofed dough into two equal halves, kneading each until soft and smooth. Keep the other dough half-covered as you’re working with the first one.
Sprinkle a clean, dry work surface generously with flour and roll out one piece of dough into a circle about 10” in diameter.
Roll the top and bottom edges of the circle, and shape like a boat, twisting the left and right ends to seal the edges. Here’s a tutorial to help.
Repeat with the other dough. Transfer both “boats” to the prepared baking tray.
Brush the edge of each khachapuri with a little oil, and non-dairy milk and sprinkle generously with bagel seasoning.
Let them sit and rise for another 10 minutes.
Bake in the preheated oven at 450°F in the middle-rack for 8 minutes.
Remove from the oven, and fill both khachapuris with the “cheese” sauce filling.
Divide the ¼ cup vegan mozzarella (if using) between the two khachapuris.
Continue baking for another 4 minutes or until the mozzarella is molten and the sauce is warm.
Remove from heat, brush the edges with olive oil and garnish generously with chopped spring onion and red pepper flakes to taste.
Serve immediately. Tear off pieces of the bread and dunk into the cheese filling and enjoy!