Prick bottoms and sides of pie crusts. Partially bake crusts at 400 degrees for 6 minutes on a preheated cookie sheet. Reduce oven to 350 degrees. Melt butter in a 10 - inch skillet over medium heat; saute onions, red peppers, and garlic until tender. Microwave asparagus in a steamer bag. Cut imitation crabmeat into 1/2 - inch cubes, approximately 1 cup.
In a medium bowl, beat together milk, soup, eggs, and flour until well mixed. Stir in onion and pepper mixture. Distribute asparagus, imitation crabmeat, and cheese evenly among baked pie crusts; carefully pour filling over top. Bake pies on a preheated cookie sheet for 50 minutes at 350 degrees, or until a knife inserted comes out clean. Cool 10 to 15 minutes on a wire rack.