In a medium to large saucepan combine onions, celery & potatoes. Pour clam juice over vegetables. Add enough water to barely cover vegetables. Bring to boil then reduce heat to medium & simmer until potatoes are tender (approximately 20 minutes).
Meanwhile, in a small sauce pan, melt butter. When melted, add flour, blend & cook for 2 minutes. Add half & half & cook, stirring until smooth & creamy. Drain vegetables, reserving liquid. Return vegetables to saucepan. Add clams & sauce mixture. Heat thoroughly (add reserved cooking liquid to make consistency to your taste.
To prepare sauce, in a large skillet combine 3 tbsp canola oil & flour little by little & mix to create a roux. Stir in flour to absorb the oil. Slowly whisk in the milk, & add Parmesan cheese & cheddar cheese. Stir in the egg to thicken the sauce, but do not allow to boil. Season with pepper, paprika, & Old Bay seasoning & remove from heat.
In a separate skillet, heat 2 tbsp canola oil. Saute mushrooms in the oil until soft.
In the same skillet, saute the asparagus.
Preheat the oven broiler. For each serving, put 2 slices of toast on a broiler-safe dish. Cover toast with layer of slices of turkey/pork roast & mushrooms. Smother each serving with sauce.
Place dish in broiler until the top of the sauce in speckled brown & bubbly. Remove from broiler, add tomatoes, & cross cross 4 stalks of asparagus (per serving) over top, & serve.
For each serving, slice up half an avocado & add as garnish.
Chef’s Note: The Kentucky Hot Brown retains a special place in my heart, as I was born in Kentucky. Of course, I had to add in more of a California flavor (and a dash of my Maryland side too) to make it healthier.