In a large saute pan on med-high heat, toast sesame seeds until fragrant and lightly colored. Set aside on a plate.
Place pan over heat and lightly coat with oil, add 1 tablespoon butter and sear the seasoned fish. Cook on both sides, about 8 minutes total. Set aside.
Wipe out pan and add 1 tablespoon butter and sautee the shallots. Add the edamames and spinach, season and deglaze with wine. Arrange on platter and place fish on top.