Preheat oven to 375 degrees F. 

Add asparagus to a sheet pan and spray with cooking spray. Gently toss the asparagus to coat and arrange into one layer for even cooking. Lay salmon on top of the asparagus. Sprinkle all ingredients with salt, pepper, red pepper flakes, and granulated garlic. Place one piece of butter and one lemon slice on top of each salmon filet. Add the fresh dill to the sheet pan as well. Carefully pour the white wine (or chicken stock) into the bottom of the pan. 

Pop the sheet pan into the oven and bake at 375 degrees F for about 20 minutes, or until fully cooked. The internal temperature of the salmon should be 145 degrees F. 

Squeeze a little fresh lemon juice onto the salmon and asparagus and serve! Enjoy with quinoa, rice, or salad for a bigger meal (and leftovers!)