Combine warm milk, sugar and yeast and let sit until yeast has dissolved, about 5 minutes.
Whisk in eggs and butter, then Bob’s Red Mill Buckwheat Pancake Mix. Cover and let rest until bubbly, about 90 – 120 minutes.
Oil or butter a nonstick skillet and heat over medium-high heat. Pour 1 Tbsp batter onto skillet per blini and cook until edges are set and bubbles have formed on the top, about 2 minutes. Flip and cook on the second side, 1 – 2 minutes. Serve immediately or hold warm in a 200°F oven.
Makes about 40 blinis.