Can you sub buckwheat flour for the buckwheat groats??? …

Name: Yeast-Free Buckwheat Blender Bread
Prep time: PT-479676H34M34S
Cook time: 1 h
Total time: PT-479676H34M34S
Cuisine: Plant-Based
Ingredients: 2 cups organic hulled buckwheat groats (350 g); 3 cups water (720 g); see notes; 1 organic apple, cored and diced (approx. 200 g); see notes; 1 tablespoon GF baking powder; see notes; 1 teaspoon sea salt