How to Make It
Preheat oven to 375°F. Warm 2 Tbsp. oil in a skillet over medium heat. Sauté shallot until softened, about 3 minutes. Add garlic; sauté 30 seconds. Add mushrooms, season with salt and pepper and increase heat to high. Cook, stirring occasionally, until mushrooms are tender and most of liquid has evaporated, about 7 minutes. Remove from heat; stir in parsley and lemon juice. Season with additional salt and pepper, if desired.
Brush bread on both sides with remaining 2 Tbsp. oil; place in a single layer on a baking sheet. Bake until golden and crisp, 6 to 8 minutes, turning once. Spread goat cheese on bread slices and top each with a heaping tablespoonful of mushroom mixture. Serve.